Questions and answers

Only if its maker lists your rack or your exact upright and hole size. REP lists its Drop-In Dip for the PR-4000, PR-5000, Omni and Apollo, says it does not fit the 1000 Series, and does not guarantee it fits other brands' racks. More in Rack dip attachments: mount type, host list and rating

Some designs let you change it by where you mount them. Synergee says its dip handles are not width-adjustable, but mounting them inside the rack gives a narrower grip and mounting on the front or outside a wider one. More in Rack dip attachments: mount type, host list and rating

Follow the rack maker. REP recommends bolting the rack down or adding its Front Foot Extensions when its drop-in dip is used on the front of the rack. Anchoring steps belong in the rack maker's manual, done by a qualified installer if you are unsure. More in Rack dip attachments: mount type, host list and rating

It means the listing sells the frame without the handles. Mutant Metals sells a 'body only' version of its Ultimate Dip Attachment that does not include handles, so check the variant before you order. More in Rack dip attachments: mount type, host list and rating

A J-cup style dip, like REP's 4000/5000 Dip Station, pins into the holes and is anchored by a pin. REP's Drop-In Dip mounts with a double C-cup into the holes, and REP describes no separate locking pin. More in Rack dip attachments: J-cup style, drop-in and mount-over

Not on Synergee's handles. Synergee says they are not width-adjustable, but mounting them inside the rack gives a narrower grip and on the front or outside a wider one. More in Rack dip attachments: J-cup style, drop-in and mount-over

It is a frame sold without handles. Mutant Metals says its UDA body-only variant does not include handles, so you need to add them before use. More in Rack dip attachments: J-cup style, drop-in and mount-over

No. REP says it mounts over the rack's safeties, with both safeties on the same side and the knobs tightened on the top one. More in Rack dip attachments: J-cup style, drop-in and mount-over

No source we found confirms it. REP lists its Drop-In Dip for the PR-4000, PR-5000, Omni and Apollo and says it does not guarantee fit on other brands. More in Will a dip attachment fit my rack?

Sunny lists the SF-XFA002 only for named Sunny Powerzone cages and does not state upright or hole sizes, so there is no basis for fit on other brands. More in Will a dip attachment fit my rack?

REP recommends bolting the rack down or adding Front Foot Extensions when its drop-in dip is used on the front of the rack. For other racks, follow your rack maker's anchoring instruction. More in Will a dip attachment fit my rack?

No. Titan says the X Dip Bar is not compatible with the T-3 Tall Folding Power Rack (41 in depth, V2), while the T-3 Y Dip Bar is. More in Will a dip attachment fit my rack?

Only Synergee sells by upright and hole size; the others name their own racks. Rack makers do not guarantee cross-brand fit: REP says it does not guarantee its Drop-In Dip will fit other brands' racks. More in Rack dip attachments with a stated rating and host list

REP's Drop-In Dip (810 lb, for the PR-4000, PR-5000, Omni and Apollo) and its 4000/5000 Dip Station (400 lb, pin-anchored) state their fit and ratings but are not in our approved catalog yet. More in Rack dip attachments with a stated rating and host list

Follow your rack maker. REP recommends bolting the rack down or adding Front Foot Extensions when its drop-in dip is used on the front of the rack. More in Rack dip attachments with a stated rating and host list

No. Rogue says its Infinity J-cups fit only 5/8 in Infinity and R-Series units, even though other racks use 2x3 in tubing, and REP says it cannot guarantee its parts fit non-REP racks. Go by the cup maker's named racks or its stated upright and hole size. More in J-cups and J-hooks: upright size, pin size and the maker's rating

It depends on the maker, and some do not say. Synergee rates a pair at 750 lb combined with both cups at equal heights, Bells of Steel uses 'combined' wording, and REP lists a rackable capacity without saying per cup or per pair. Never split a pair rating into a per-cup number. More in J-cups and J-hooks: upright size, pin size and the maker's rating

Choose cups whose maker states how they lock or are retained, and use that lock as the manual shows. Synergee's manual shows an adjustment knob for both 5/8 in and 1 in holes; Bells of Steel states included magnetic pins only for its Manticore Sandwich J-cups. If a lock cannot be installed on your rack, stop and contact the maker. More in J-cups and J-hooks: upright size, pin size and the maker's rating

Nothing structural: both names describe the hook that holds the bar on the upright. Titan calls its T-3 parts J-hooks, while Rogue, REP and Synergee say J-cups. More in J-cups and J-hooks: upright size, pin size and the maker's rating

The one whose maker lists your rack or your measured upright and hole size. Titan's fit only the T-3, Sunny's only the Powerzone models Sunny names, and Synergee's any rack whose upright and hole class match a Synergee variant. More in J-cups compared: upright, pin size, liner and rating

No. Synergee rates a pair at 750 lb combined when both cups are set at equal heights. More in J-cups compared: upright, pin size, liner and rating

They are not in our approved catalog yet. Their makers' fit and rating details are in our J-cup guides. More in J-cups compared: upright, pin size, liner and rating

No. Per pair at equal heights, combined and unstated scopes are different measures. Choose by fit and lock first, and read each rating in the maker's own words. More in J-cups compared: upright, pin size, liner and rating

Neither maker lists that pairing. Garage Gym Experiment reported that Titan T-2 accessories relying on lock-in pins did not fully work on a PR-1100, so treat it as not compatible unless Titan lists your rack. More in J-cups for 2x2 and 2x3 uprights: what the makers list

Start with the rack maker's own cups. For the Titan T-3, which lists 11/16 in holes, Titan states a 5/8 in pin for its T-3 J-hooks. A third-party cup must list your upright and hole size. More in J-cups for 2x2 and 2x3 uprights: what the makers list

Per pair. Synergee rates a pair at 750 lb combined when both cups are set at equal heights. Do not split it into a per-cup number. More in J-cups for 2x2 and 2x3 uprights: what the makers list

No. 2x2 in works out to 50.8 x 50.8 mm, not 50 x 50 mm. More in J-cups for 2x2 and 2x3 uprights: what the makers list

Rogue sells its Ghost Roller J-Cups 2.0 in a 5/8 in pin version for Monster Lite units and a separate 1 in version for Monster Series units. Choose the 5/8 in version for Monster Lite. More in J-cups for 3x3 uprights: 5/8 in and 1 in versions

Bells of Steel says the Hydra version of its standard J-cups fits non-Bells of Steel racks with true 3 x 3 in uprights and 5/8 in holes. Both conditions must hold; it is not a list of approved brands. More in J-cups for 3x3 uprights: 5/8 in and 1 in versions

Usually the maker does not say. REP lists 1,000 lb rackable capacity for its Round Sandwich J-cups without a per-cup or per-pair scope, and Bells of Steel says 1,000 lb combined. Quote the maker's wording and do not split it. More in J-cups for 3x3 uprights: 5/8 in and 1 in versions

Not on the label alone. 3x3 in works out to 76.2 mm, 1.2 mm per side larger than 75 mm. Only the attachment maker's stated size or host list can answer it. More in J-cups for 3x3 uprights: 5/8 in and 1 in versions

They can. REP says it does not guarantee compatibility with other companies' products and that warranties can be voided in those cases. Ask your rack maker before you rely on its warranty with another brand's part. More in Rack-brand vs third-party attachments

We found no comparative data either way. Compare the documented fields instead: upright, hole and pin size, host list, rating and its scope, lock and warranty. More in Rack-brand vs third-party attachments

Bells of Steel says the Hydra version of its standard J-cups fits non-Bells of Steel racks with true 3 x 3 in uprights and 5/8 in holes. Synergee sells by upright and hole size rather than by rack name. More in Rack-brand vs third-party attachments

Synergee's US warranty page gives frames and structural welds a lifetime warranty for the original purchaser. It does not name J-cups or other attachments specifically. More in Rack-brand vs third-party attachments

They wrap the upright from both sides instead of hooking on one face. Makers describe the design, but we found no measured comparison of stability or bar protection between styles, so choose by fit, rating and the maker's stated lock. More in Standard vs sandwich vs roller J-cups

Not on the Rogue Ghost Roller 2.0 pages we read: Rogue lists sizes, materials and pin versions but no load rating. Do not assume one. More in Standard vs sandwich vs roller J-cups

Ultra-high-molecular-weight polyethylene, a slick, tough plastic many makers use to line J-cups. Rogue and Synergee name it as their liner; we found no published wear data comparing liners. More in Standard vs sandwich vs roller J-cups

No measured comparison exists that we could read. Makers describe their liners (UHMW, HDPE, plastic lining), and Synergee says its lining protects knurling and bar finish, but that is a maker claim, not a test result. More in Standard vs sandwich vs roller J-cups

Only if the cup maker lists it or states your exact hole size. Rogue says its Infinity J-cups are compatible only with 5/8 in Infinity and R-Series units, even though other racks use 2x3 tubing. More in J-cups for 2x2 and 2x3 uprights with the pin size stated

No. REP says its 1000 Series standard J-cups are made for 2x2 in uprights with 1 in pins, and Sunny lists a 3/4 in hardware peg hole on its SF-XF9933 half rack. More in J-cups for 2x2 and 2x3 uprights with the pin size stated

No. A 2x2 in upright works out to 50.8 x 50.8 mm, which is not the same size as a 50 x 50 mm metric tube. More in J-cups for 2x2 and 2x3 uprights with the pin size stated

Some makers publish one and some do not. Synergee rates its landmine to support up to 500 lb, while Rogue's Monster Landmine 2.0 page and REP's Adroit page list no load rating. We only pick landmines whose maker states a rating and a lock. More in Rack landmine attachments: mount, sleeve and lock

Only if its maker says so. Synergee says its sleeve accepts both 1 in standard and 2 in Olympic bar ends, while Titan gives a 2 in sleeve opening for its PPLDM landmine. More in Rack landmine attachments: mount, sleeve and lock

Not necessarily. Rogue says the knurled knob on its Monster Landmine 2.0 has no locking feature and must be checked before each use. A pin through the upright, as on Synergee's landmine, is a stated lock. More in Rack landmine attachments: mount, sleeve and lock

Only if the maker publishes one. Synergee rates its landmine to support up to 500 lb; Rogue's Monster Landmine 2.0 and REP's Adroit rack version state no load rating. More in Rack landmines: upright, safety-bar and sleeve-insert mounts

Synergee says its sleeve accepts both 1 in standard and 2 in Olympic bar ends. Rogue's Monster Landmine 2.0 uses a 2 in sleeve, so ask the maker before using a 1 in bar in any other landmine. More in Rack landmines: upright, safety-bar and sleeve-insert mounts

Not necessarily. Synergee describes its pivot as 180 degrees in two directions, not a full 360-degree rotation. More in Rack landmines: upright, safety-bar and sleeve-insert mounts

Rogue says the knurled knob on its Monster Landmine 2.0 has no locking feature and must be checked before each use. More in Rack landmines: upright, safety-bar and sleeve-insert mounts

Rogue's page states no load rating, and Rogue says the knurled knob that holds it has no locking feature and must be checked before each use. We list only landmines with a stated rating and lock. More in Rack landmines with a stated rating and a locking pin

REP's Adroit page lists no load rating, materials or compatible hole sizes for the rack-mounted version. More in Rack landmines with a stated rating and a locking pin

Only if its maker says so. Synergee says its sleeve accepts both 1 in and 2 in bar ends; Titan gives a 2 in sleeve opening for its PPLDM landmine. More in Rack landmines with a stated rating and a locking pin

When the attachment maker names your rack, or states your exact upright size, hole size and spacing. REP, for example, says it cannot guarantee its parts fit non-REP racks because of machining differences, so a matching tube size alone is not proof. More in Before you buy: measure your rack, read the rating, check the seller

No. A 3x3 in upright works out to 76.2 x 76.2 mm, which is 1.2 mm larger per side than a 75 x 75 mm tube. That is a calculation from the exact inch, not a fit tolerance. More in Before you buy: measure your rack, read the rating, check the seller

Check who sells and ships each listing. US Customs and Border Protection says about 87% of counterfeit seizures occur in small packages and advises shopping from authenticated online sources; a brand's own page linking a store is the clearest sign. More in Before you buy: measure your rack, read the rating, check the seller

It can, depending on the rack maker. REP says it does not guarantee compatibility with other companies' products and that warranties can be voided in those cases. Read your rack maker's warranty before mixing brands. More in Before you buy: measure your rack, read the rating, check the seller

Not on the strength of the label. 3x3 in works out to 76.2 mm, 1.2 mm per side larger than 75 mm. Only the attachment maker's host list or stated upright size can answer it. More in 2x2 vs 50 mm, 3x3 vs 75 mm and 60 mm rack tubing

60 mm is about 2.362 in. Force USA labels its 60 mm MyRack tubing 2.4 in, while Bells of Steel labels its 60 mm tubing 2.3 in. Both are rounded labels for the same metric size. More in 2x2 vs 50 mm, 3x3 vs 75 mm and 60 mm rack tubing

No. A 2x2 in upright works out to 50.8 x 50.8 mm, which is not the same size as a 50 x 50 mm metric tube. More in 2x2 vs 50 mm, 3x3 vs 75 mm and 60 mm rack tubing

Bells of Steel says the Hydra version of its standard J-cups fits non-Bells of Steel racks with true 3 x 3 in uprights and 5/8 in holes. Both conditions apply; measure before relying on it. More in 2x2 vs 50 mm, 3x3 vs 75 mm and 60 mm rack tubing

Rarely. REP says it cannot guarantee compatibility with non-REP items, and an independent reviewer reported that Titan T-2 lock-in pins could not be used as intended on a REP PR-1100. Buy per rack, by each maker's host list. More in Attachments for mixed racks: a studio inventory by rack system

Keep one record per rack with its model, year, upright size, hole diameter, hole spacing, pin class and the attachments whose makers list it, and label each attachment with its rack. More in Attachments for mixed racks: a studio inventory by rack system

Bells of Steel says Hydra attachments fit Manticore racks through the keyholes, though they may lift slightly when pushed upward, and calls Manticore parts on a Manticore rack the most stable fit. That covers Bells of Steel racks only. More in Attachments for mixed racks: a studio inventory by rack system

Not always. Titan says its T-2 Adjustable Monolift Attachments do not fit T-2 racks made before October 2020. More in Attachments for mixed racks: a studio inventory by rack system

Follow your rack maker. REP recommends bolting down or adding Front Foot Extensions when its drop-in dip is used on the front of the rack. More in Bolt-down, flat-foot and folding racks: what the maker says before you add attachments

Only if the rack's maker allows it. Rogue says Safety Spotter Arms and band pegs should not be used with its RML-390F Flat Foot Monster Lite rack, even though that rack needs no bolting. More in Bolt-down, flat-foot and folding racks: what the maker says before you add attachments

Titan says the bolt-down X-3's base mounting holes take 3/8 x 3 in lag bolts or concrete sleeve anchors. It gives no bolt-down specification for the X-3 Flat Foot. More in Bolt-down, flat-foot and folding racks: what the maker says before you add attachments

Titan support says its folding racks anchor to wall studs, with stringers recommended. More in Bolt-down, flat-foot and folding racks: what the maker says before you add attachments

No. Titan says its T-3/X-3 stabilizer feet do not fit X-3 Flat Foot racks because the hole spacing does not match. More in Bolt-down, flat-foot and folding racks: what the maker says before you add attachments

We could not confirm an official AliExpress store for any rack brand we cover, so treat AliExpress listings of brand-name rack parts with caution. US Customs and Border Protection says most counterfeit seizures happen in small packages and advises buying from authenticated sources. More in Buying rack attachments on Amazon or AliExpress: what to check first

Read the return terms before you order. Amazon's US policy allows most returns within 30 days of delivery, with eligibility on each product page, and third-party sellers handle their own returns. AliExpress's 2022 Free Return terms covered only labeled items, gave 15 days and required confirmation for orders over 30 kg or oversized boxes. More in Buying rack attachments on Amazon or AliExpress: what to check first

It depends on value, carrier and the goods. The CBSA says some courier-shipped goods worth not more than CAD 20, 40 or 150 are exempt from duties and/or taxes, with conditions, and that courier and broker fees are separate. By mail, goods worth CAN$20 or less are not subject to GST. More in Buying rack attachments on Amazon or AliExpress: what to check first

Start from the brand's own website and follow its store links, then check 'Ships from / Sold by' on the listing. Synergee's J-cup page links its Amazon store in the US and Canada, and Yes4All's page links Amazon.com product pages. More in Buying rack attachments on Amazon or AliExpress: what to check first

Measure the outside of the tube across two opposite faces, then turn 90 degrees and measure the other pair. On a rectangular tube such as 2x3 in the two numbers differ, so note which face carries the holes. More in How to measure your rack's uprights, holes and spacing

Measure it and compare with the maker's published size. 2 in works out to 50.8 mm and 3 in to 76.2 mm, so a nominal 2x3 in tube is not the same size as a 50x75 mm tube. More in How to measure your rack's uprights, holes and spacing

Measure from the center of one hole to the center of a hole several holes away, then divide by the number of gaps. Do it in more than one zone, because spacing can change along the upright; Titan says some T-2 sections measure 1 in although the holes are 2 in on center. More in How to measure your rack's uprights, holes and spacing

It can add a little, but no maker we found publishes coated sizes. Record what you measure and what the maker publishes, and let the attachment maker decide whether your rack is on its host list. More in How to measure your rack's uprights, holes and spacing

No. 5/8 in works out to 15.875 mm. Treat the two as different numbers even when a maker prints them side by side. More in How to measure your rack's uprights, holes and spacing

Check the order confirmation or invoice first, then any label on the frame, then the assembly manual. Write down the maker, the full model name and the purchase month and year. More in Identify your rack before buying any attachment

Lines and revisions within one brand differ. Titan says its T-2 monolift does not fit T-2 racks made before October 2020, and Rogue says band pegs and Safety Spotter Arms should not be used on the RML-390F. More in Identify your rack before buying any attachment

Record both and ask the maker which applies to your rack. Titan gives the T-2 hole as 26 mm in one place and 1 in in another, and lists the T-2 as 12-gauge in support answers and 14-gauge on its comparison page. More in Identify your rack before buying any attachment

Find the model name and year, then measure the upright, hole diameter and hole spacing yourself and ask the attachment maker whether those numbers are on its host list. Do not rely on old secondhand charts. More in Identify your rack before buying any attachment

Titan's warranty page says the warranty is available only to the original retail purchaser who acquired the product directly from Titan. It does not mention Amazon or other retailers, so check with Titan before relying on the warranty for a marketplace purchase. More in Rack attachment warranties and returns by maker

Usually not for life. REP gives pop-pins one year and Bells of Steel gives pins 90 days, while both give lifetime coverage to frames and structural welds. Rogue's warranty page has no separate row for pins. More in Rack attachment warranties and returns by maker

REP's US warranty policy says it does not apply to products that leave the lower 48 states. REP runs separate country sites, and we did not read the Canadian site's terms, so check those if you buy in Canada. More in Rack attachment warranties and returns by maker

Tighter spacing through the bench and clean-pull zone with wider spacing above and below. Rogue's SML-2, for example, uses 1 in spacing in that zone and 2 in above and below. More in Westside vs 2-inch vs metric hole spacing

For a J-cup that hangs on a single pin, spacing only changes how finely you can set the height. It matters for fit when the attachment has a second pin or lock tab that must land in another hole. More in Westside vs 2-inch vs metric hole spacing

No. 2 in works out to 50.8 mm, so a part built for one pitch can miss the other over a long span. Two Rep Cave retracted a report that Titan had moved to 2 in on all racks, saying they still had 50 mm spacing at the time. More in Westside vs 2-inch vs metric hole spacing

The attachment was built for a different pitch than your rack's. Stop and ask the attachment maker; never drill, file or leave the pin out. More in Westside vs 2-inch vs metric hole spacing

Measure the upright size, hole diameter and hole spacing yourself, then buy only attachments whose maker states those exact numbers. The measuring guide shows how; the upright size finder lists makers' sizes for each tube. More in Rack attachment fit finder

Because no maker page, manual or support answer we read states it. We leave it blank rather than guess or copy a figure from a reseller. More in Rack attachment fit finder

Because the maker publishes both. Titan's T-2 support answers say 12-gauge steel, while its rack comparison page says 14-gauge; we show the conflict instead of picking one. More in Rack attachment fit finder

Do not assume so. A 3x3 in upright works out to 76.2 mm, 1.2 mm larger per side than 75 mm. Fit depends on the attachment maker's list, not on a converted number. More in Upright size finder

Both labels are used for 60 mm tubing: Bells of Steel labels its 60 mm tubing 2.3 in and Force USA labels MyRack 2.4 in. A shared metric size does not establish cross-brand fit. More in Upright size finder

Paint and coatings add thickness, and no maker we read publishes tolerances. Measure again, then compare with your rack maker's stated size; if it still does not match, ask the maker. More in Upright size finder

Only what its maker states, in the maker's scope. Synergee rates its pegs at 250 lb per peg and 500 lb per pair, Titan rates its TITAN Series holders at 330 lb per sleeve, and REP rates its 1000 Series Weight Storage at up to 2,000 lb for the whole unit. Bells of Steel's change plate pegs page states no capacity. More in Plate and bar storage on a rack: horns, sleeves and ratings

We can only report what makers say. Synergee's FAQ recommends using its plate-storage pegs on a rack rated for 750 lb or more. For anchoring, follow your rack maker's manual. More in Plate and bar storage on a rack: horns, sleeves and ratings

Yes, if the rack maker sells storage for it. REP's 1000 Series Weight Storage for the PR-1000 and PR-1100 has two vertical barbell storage spots, and REP says most of its bar storage is built around standard 2 in Olympic barbells. More in Plate and bar storage on a rack: horns, sleeves and ratings

Only where its maker lists, and where loaded plates stay outside the bar path, the bench and your walk-out. Usable length shows how far loaded plates reach: 11.25 in on Titan's TITAN Series holders, 11.8 in on Synergee's pegs. More in Bar storage and the rack's working zone

Check first. REP says most of its barbell storage is built around standard 2 in Olympic bars and advises checking slot or tube dimensions and capacity for specialty bars. More in Bar storage and the rack's working zone

It depends on the product. REP says its 1000 Series weight storage adds 10 in of depth and 17 in of width to a PR-1000 or PR-1100. More in Bar storage and the rack's working zone

REP rates the whole unit for up to 2,000 lb and gives no per-spot figure. More in Bar storage and the rack's working zone

Only what its maker states, in its scope. Titan rates its TITAN Series holders at 330 lb per sleeve, Synergee its pegs at 250 lb per peg and 500 lb per pair, and REP its 1000 Series storage at up to 2,000 lb for the whole unit. More in Rack plate storage: horn length, sleeve size and per-peg ratings

Measure the total thickness of the plates you want to store and compare it with the usable length: 8 in on Titan's T-2 holders and REP's 1000 Series horns. We have no plate-width figures to answer it for you. More in Rack plate storage: horn length, sleeve size and per-peg ratings

Ask your rack's maker. For its own pegs, Synergee recommends a rack rated for 750 lb or more. More in Rack plate storage: horn length, sleeve size and per-peg ratings

The Bells of Steel page states no load capacity for them, so we do not treat them as rated storage. More in Rack plate storage: horn length, sleeve size and per-peg ratings

No. Synergee gives both: 250 lb per peg and 500 lb per pair. REP's 1000 Series Weight Storage is rated up to 2,000 lb for the whole unit, with no per-spot rating. More in Rack plate storage with a stated per-peg rating

Bells of Steel's page states no load capacity for them, so we do not treat them as rated storage. More in Rack plate storage with a stated per-peg rating

They state ratings, 330 lb per sleeve for the TITAN Series pair and 250 lb per holder for the T-2, but they are not in our approved catalog yet. More in Rack plate storage with a stated per-peg rating

Only if its maker names your rack line and the crossmember it attaches to. REP lists its Crossmember Multi-Grip Pull-Up Bar for the 5000 Series and says it cannot guarantee compatibility with non-REP items. More in Rack pull-up and multi-grip bars: crossmember, bracket and rating

Whatever its maker publishes, in the maker's wording. REP lists 1,000 lb for its 5000 Series Crossmember Multi-Grip Pull-Up Bar without saying what the figure covers; Titan states a weight capacity on each of its pull-up bar pages. More in Rack pull-up and multi-grip bars: crossmember, bracket and rating

It depends on how the bar mounts, so read the bar maker's instructions. Side holes do decide some fits: Titan says its T-2 rack has no side holes, which is why its lat tower is not compatible with it. More in Rack pull-up and multi-grip bars: crossmember, bracket and rating

Only if its maker lists your rack. REP's 5000 Series Crossmember Multi-Grip pairs with named REP crossmembers and connectors, and REP does not guarantee fit with non-REP items. More in Rack pull-up bars: crossmember fit, brackets and rating

Whatever its maker states, in its words. REP lists 1,000 lb for its 5000 Series Crossmember Multi-Grip without saying what the figure covers. More in Rack pull-up bars: crossmember fit, brackets and rating

Only with a bar or crossmember your rack's maker lists for that rack. Never drill or add unlisted brackets; REP says warranties can be voided when other companies' products are used. More in Rack pull-up bars: crossmember fit, brackets and rating

Titan says the T-2 has no side holes, which is why its lat tower and pivoting boxing reflex trainer are not compatible with it. More in Rack pull-up bars: crossmember fit, brackets and rating

Titan lists them only for its own rack lines, and Sunny only for named Powerzone cages. Rack makers do not promise cross-brand fit; REP, for example, says it cannot guarantee compatibility between REP and non-REP items. More in Rack pull-up bars with a stated host and rating

REP lists a 1,000 lb capacity and a 1.25 in bar for its 5000 Series Crossmember Multi-Grip Pull-Up Bar, but it is not in our approved catalog yet. More in Rack pull-up bars with a stated host and rating

None of them is listed for the T-2. Titan also says the T-2 has no side holes, which rules out some of its attachments. More in Rack pull-up bars with a stated host and rating

The size your rack maker lists, which is often a class rather than a measured hole. Rogue lists 1 in hardware on the RM-6 Monster Rack and 5/8 in holes on the SML-2; REP lists 5/8 in hardware on the PR-4000 and 1 in on the PR-5000. Check your rack's page in the fit finder. More in Rack pins, band pegs and hardware: hole, pin and bolt sizes

We can only report what makers say. Oak Club says its MagPins are for experienced lifters only, tells users to check installation before each lift and to always use a failsafe method of attachment securement, and publishes no structural rating. More in Rack pins, band pegs and hardware: hole, pin and bolt sizes

No. Rogue states that band pegs should not be used with its RML-390F Flat Foot Monster Lite rack. Our sources publish no band-peg dimensions or ratings, so use only pegs your rack maker lists for your rack. More in Rack pins, band pegs and hardware: hole, pin and bolt sizes

Rogue's Monster Strap Safety System manual lists four strap hangers, two straps, four 5/8 x 4.75 in hex bolts and four 5/8 in nylock nuts. More in Rack pins, band pegs and hardware: hole, pin and bolt sizes

Only if the J-cup maker lists your rack or sells a converter for it. Rogue, for example, sells its Ghost Roller J-Cups 2.0 in separate 1 in and 5/8 in versions for Monster and Monster Lite units. More in 5/8 in vs 1 in rack hardware

A hole that joins a larger opening to a smaller one. Bells of Steel says Manticore side holes combine a 1 in opening with a 5/8 in opening so 5/8 in Hydra attachments can pin in. More in 5/8 in vs 1 in rack hardware

No. A converter adapts a pin to a hole class; it does not make an attachment fit a different upright or pitch. Synergee sells some J-cup variants without the converter, so confirm it is in the variant you choose. More in 5/8 in vs 1 in rack hardware

No. 5/8 in works out to 15.875 mm. The two are close labels, not the same size. More in 5/8 in vs 1 in rack hardware

Treat it as not installed. Take it off the rack and contact the attachment maker with your rack model, year and hole spacing. More in When an attachment's locking pin does not line up

No. Do not drill, file, bend or ream the rack or the attachment, and do not leave the pin out. REP says products modified outside REP lose warranty coverage, and the lock exists for a reason. More in When an attachment's locking pin does not line up

Titan lists T-2 holes at 2 in on center and REP lists the PR-1100 at 3 in, so a part built for one pitch can miss on the other. Garage Gym Experiment reported that T-2 accessories relying on lock-in pins did not fully work on a PR-1100. More in When an attachment's locking pin does not line up

REP says it does not guarantee compatibility with other companies' products and that warranties can be voided in those cases. More in When an attachment's locking pin does not line up

Follow the maker. Some J-cups state a lock, such as the mag pins Bells of Steel includes with its Manticore Sandwich J-cups or the adjustment knob in Synergee's manual; others state none. If the maker shows a lock, use it every time. More in Pins, hitch pins, clevis pins, knobs and magnets: how attachments lock

We cannot rate them. Oak Club says its MagPins are for experienced lifters only and tells users to check installation before each lift and always use a failsafe method of attachment securement. More in Pins, hitch pins, clevis pins, knobs and magnets: how attachments lock

A pin with a head on one end and a cross-hole or clip on the other, held in place by a spring clip or ring. REP locks its Flip-Down Safeties with a clevis quick-release pin. More in Pins, hitch pins, clevis pins, knobs and magnets: how attachments lock

That every pin, knob or clip the maker shows is in place and fully seated. Rogue's strap manual says to make sure each hanger's pin notch is fully seated and that all rigging must be inspected before each use. More in Pins, hitch pins, clevis pins, knobs and magnets: how attachments lock

No. 5/8 in works out to 15.875 mm, slightly less than 16 mm. Some makers print 16 mm beside 5/8 in as a rounded label; treat them as different numbers. More in Hole diameter vs pin diameter: two different numbers

Use the pin size the attachment maker states for your rack. Titan lists 11/16 in holes on the T-3 and a 5/8 in pin for its T-3 J-hooks, so the hole and the pin are different numbers on the same system. More in Hole diameter vs pin diameter: two different numbers

Only if the attachment maker lists your rack or hole size as a host. Never improvise with a smaller pin, a sleeve or a shim of your own. More in Hole diameter vs pin diameter: two different numbers

Titan gives it as 26 mm in its spec table and as 1 in holes in its description. Record both and ask Titan which applies to your rack. More in Hole diameter vs pin diameter: two different numbers

Use the pin size your rack maker states for its own attachments, not the hole size. Titan, for example, lists 11/16 in holes on the T-3 but a 5/8 in pin for its T-3 J-hooks. More in Replacement and magnetic rack pins

Only where the pin maker allows it. Oak Club says its MagPins are for experienced lifters only and tells users to check installation before each lift and always use a failsafe method of attachment securement. More in Replacement and magnetic rack pins

Long enough to pass fully through the attachment and the upright as the maker designed. Compare the pin maker's usable shaft length with the pin it replaces; Oak Club lists 4-1/2 in of usable shaft on the MagPin 3. More in Replacement and magnetic rack pins

Often for less time than the frame. REP gives pop-pins one year, and Bells of Steel gives pins 90 days, while both give frames and structural welds lifetime coverage. More in Replacement and magnetic rack pins

No. A 5/8 in pin is 15.875 mm, slightly less than the 16 mm some makers print beside it. Treat them as different sizes and buy the pin your rack maker specifies. More in Rack pins with the diameter and shaft length stated

Follow the pin maker. Oak Club says its MagPins are for experienced lifters only, and tells users to check installation before each lift and always use a failsafe method of attachment securement. More in Rack pins with the diameter and shaft length stated

Not at Bells of Steel: its warranty gives frames and structural welds a limited lifetime but pins 90 days. More in Rack pins with the diameter and shaft length stated

Only the ones the safety maker or the rack maker lists for your rack and its depth. Rogue says its Monster spotter arms and strap system fit only Monster Series racks, and Rogue says Safety Spotter Arms should not be used on its RML-390F Flat Foot rack at all. More in Rack safeties: straps, pin-pipe, flip-down and spotter arms

Not as a type: compare the numbers each maker gives for the exact product, in its own wording. Titan lists 650 lb rackable for its T-3/X-3 pin and pipe set and 800 lb combined dynamic drop capacity for its T-3 strap spotter arms. Rogue's '10,000 lb' strap figure describes the strap material, not the system. More in Rack safeties: straps, pin-pipe, flip-down and spotter arms

Measure your rack's inside depth and pick the option the strap maker lists for it. Synergee sells 23, 29 and 35 in inside-depth options, with the 2x2 version in 23 in only. More in Rack safeties: straps, pin-pipe, flip-down and spotter arms

In February 2021 the CPSC announced recall 21-721 of about 1,940 REP PR-4000 and PR-5000 strap safety brackets, because poorly welded brackets could detach when weight dropped onto the straps. The recall covered those brackets only, not later REP products. More in Rack safeties: straps, pin-pipe, flip-down and spotter arms

Only the maker's wording can say. REP lists 1,000 lb rackable for its Round Sandwich J-Cups without a per-cup or per-pair scope, while Bells of Steel calls its 1,000 lb figure 'combined'. If the scope is not stated, treat it as unknown and ask the maker. More in Rack attachment load ratings: pair, peg, combined, drop and rackable

A static figure is for a resting load; a dynamic or drop figure is for a load that lands. For the same change in momentum, a shorter stop means a larger average force, which is why the numbers differ. No source gives a conversion between them. More in Rack attachment load ratings: pair, peg, combined, drop and rackable

ASTM F2276, F3105 and F3104 and ISO 20957-4 cover fitness equipment, external weight storage and free-standing barbell racks. No attachment in the sources we read states that it meets one, and ISO 20957-2 covers stacked-weight machines, not racks. More in Rack attachment load ratings: pair, peg, combined, drop and rackable

No. Each rating covers only its own part on its listed host, so J-cups and safeties on the same rack never make a combined system rating. More in Rack attachment load ratings: pair, peg, combined, drop and rackable

CPSC recall 21-721 of February 11, 2021 covered about 1,940 REP PR-4000 and PR-5000 strap safety brackets (SKUs PRA-4120 and PRA-5122) sold April to December 2020. It does not cover other REP products or revisions; check the notice against your SKU. More in Rack attachment recalls and pre-use inspection

Search the CPSC and SaferProducts.gov by brand, model and date, check Health Canada if you are in Canada, and ask the maker with your SKU. The CPSC does not guarantee the accuracy of SaferProducts.gov reports. More in Rack attachment recalls and pre-use inspection

Follow the maker's manual. Rogue's strap manuals say each hanger's pin notch must be fully seated and all rigging inspected before each use; Oak Club says to check pin installation before each lift. More in Rack attachment recalls and pre-use inspection

In the US, on SaferProducts.gov; in Canada, through Health Canada's online consumer incident reporting form. Tell the maker as well. More in Rack attachment recalls and pre-use inspection

In April 2011 the CPSC announced a recall of about 5,500 Rogue barbell brackets (J-cups) sold March 2009 to December 2010 for SPX, R-3, R-4 and Infinity units. It is historical and does not apply to current products. More in Rack attachment recalls and pre-use inspection

Measure your rack's inside depth and pick the closest option the maker offers. Synergee sells 23, 29 and 35 in inside-depth options. More in Safety straps: rack depth, hangers and the maker's rating

Rogue calls its nylon strap 'safety-rated for 10,000 lb', but that wording covers the strap component only. It is not a rating for the brackets, pins or the system. More in Safety straps: rack depth, hangers and the maker's rating

Some do, if the maker lists 2x2. Synergee offers a 2x2 version in the 23 in inside depth only. More in Safety straps: rack depth, hangers and the maker's rating

Rogue's strap manuals say all rigging must be inspected before each use. They give no longer interval. More in Safety straps: rack depth, hangers and the maker's rating

In February 2021 the CPSC announced recall 21-721 of about 1,940 REP PR-4000 and PR-5000 strap safety brackets sold April to December 2020. It is a historical recall; check the CPSC notice for affected units. More in Safety straps: rack depth, hangers and the maker's rating

Only arms whose maker lists your stand. Spotter arms mount to one upright, so they do not need a bay, but the maker's host list still decides fit. More in Spotter arms for squat stands and racks

Rogue says its Monster Safety Spotter Arms 2.0 are compatible only with Monster Series units, and Monster Lite is not listed. Rogue also says Safety Spotter Arms should not be used with the RML-390F. More in Spotter arms for squat stands and racks

It is Titan's term for its T-3 strap spotter arms: '800 lb combined dynamic drop capacity'. Titan does not define it on the page and also lists 800 lb per pair as rackable capacity without explaining the two, so quote it as written. More in Spotter arms for squat stands and racks

Because its maker designed it to lock that way. Titan's T-3 strap arms use two hitch pins per arm, and its T-2 arms have 200 mm between pin centers, so both pins must line up with holes. If one cannot go in, do not use the arm. More in Spotter arms for squat stands and racks

No source we found compares them by catching performance. Choose the type your rack's maker or the safety's maker lists for your rack, and compare ratings only in each maker's wording. REP's 'quieter than pin-pipe' line is its own description, not a measurement. More in Straps vs pin-pipe vs flip-down safeties vs spotter arms

Steel channels that pin to the uprights and swing down into place. REP builds its version from 11-gauge steel and locks it with a clevis quick-release pin. More in Straps vs pin-pipe vs flip-down safeties vs spotter arms

Inside safeties (straps, pin and pipe, flip-down) span the bay and must match the rack's inside depth. Spotter arms mount outside on one upright. Use what the maker lists for your rack; a squat stand has no bay, so it can only take arms its maker lists. More in Straps vs pin-pipe vs flip-down safeties vs spotter arms

For Titan's T-3 24 in flip-down safety, Titan says the gap is intentional because the bar could not be installed or flipped down without it. That answer covers that model only; for any other safety, ask its maker. More in Straps vs pin-pipe vs flip-down safeties vs spotter arms

No. Rogue's 10,000 lb wording describes the nylon strap, not the brackets, pins or the system. More in Straps vs pin-pipe vs flip-down safeties vs spotter arms

Measure your rack's inside depth and pick the closest option the maker sells. Synergee offers 23, 29 and 35 in inside-depth options, and only 23 in for 2x2 uprights. More in Safety straps and spotter arms with a stated rating and depth

They state fit and ratings, for example Rogue's Monster Safety Strap 2.0 for Monster Series racks only and REP's Strap Safeties 2.0 at 700 lb for the 1000 Series, but they are not in our approved catalog yet. More in Safety straps and spotter arms with a stated rating and depth

No. Use arms the maker lists for your rack. Rogue says Safety Spotter Arms should not be used with its RML-390F Flat Foot rack at all. More in Safety straps and spotter arms with a stated rating and depth

Rogue says the Infinity J-cup set is compatible only with 5/8 in Infinity and R-Series units, so Rogue lists no other brand's 2x3 rack. For another 2x3 rack, go by that attachment maker's own list. More in Rogue Infinity and R-Series (2x3)

Rogue lists a 5/8 in pin. Calculated from 25.4 mm per inch that is 15.875 mm, which is a calculation, not a fit tolerance. More in Rogue Infinity and R-Series (2x3)

In April 2011 the CPSC announced a recall of about 5,500 Rogue barbell brackets sold March 2009 to December 2010 for the SPX stand, R-3 and R-4 racks and Infinity Rigs, because the weld between bracket and pin could break. It is a historical recall and does not apply to current products. More in Rogue Infinity and R-Series (2x3)

Rogue states the Monster Safety Spotter Arms 2.0 are compatible only with Monster Series racks and rigs, and Monster Lite is not on that list. For a Monster Lite rack, use the parts Rogue lists for Monster Lite. More in Rogue Monster Lite racks

Rogue lists 5/8 in bolts and fasteners on the RML-690, the same as its Infinity Series, with 3x3 in 11-gauge uprights. The page does not state the hole diameter. More in Rogue Monster Lite racks

Rogue calls the 3 in nylon straps 'rated for over 10,000LB'. That wording is about the strap itself, not a lifting or rackable rating for the whole strap safety system. More in Rogue Monster Lite racks

Rogue lists a Westside pattern with 1 in spacing through the bench and clean-pull zone and 2 in spacing above and below. Rogue does not give the zone's exact start and end heights. More in Rogue SML-2 Monster Lite squat stand

Rogue lists 5/8 in laser-cut holes and 5/8 in bolts, fasteners and J-cup pins on the SML-2. More in Rogue SML-2 Monster Lite squat stand

Rogue sells Monster and Monster Lite versions separately: the Ghost Roller J-Cups 2.0 come in a 1 in pin version for Monster Series units and a 5/8 in pin version for Monster Lite units. The SML-2 has 5/8 in holes, so choose the Monster Lite version. More in Rogue SML-2 Monster Lite squat stand

Rogue states that Safety Spotter Arms, and band pegs, should not be used with the RML-390F Flat Foot Monster Lite Rack. More in Rogue RML-390F Flat Foot Monster Lite rack

Rogue says the RML-390F does not need to be bolted to the floor before use. The band-peg and spotter-arm restriction still applies. More in Rogue RML-390F Flat Foot Monster Lite rack

Rogue sells them as separate versions: Monster parts use 1 in pins and Monster Lite parts use 5/8 in pins, and Rogue lists the Monster Lite Strap Safety System 2.0 only for Monster Lite racks and rigs. Choose the Monster version for an RM-6. More in Rogue Monster racks

Rogue states the Monster Safety Spotter Arms 2.0 were 'tested to withstand drops of up to 800LB'. Rogue does not say per arm or per pair or give the test method, so read it as Rogue's own claim for these arms on Monster Series units only. More in Rogue Monster racks

Rogue's Monster Strap Safety System manual lists four strap hangers, two straps, four 5/8 x 4.75 in hex bolts and four 5/8 in nylock nuts. Strap length depends on the option chosen at checkout. More in Rogue Monster racks

Not by default. REP's Drop-In Dip Attachment does not fit the 1000 Series, and its 4000/5000 Series Dip Station is listed for the PR-4000 and PR-5000 only. Use the parts REP lists for the 1000 Series. More in REP PR-1000 and PR-1050

REP lists both with 2x2 in 14-gauge uprights, but the PR-1000 has 2 in hole spacing and the PR-1100 has 3 in. More in REP PR-1000 and PR-1050

REP's EU storefront lists 700 lb per pair for the 1000 Series flip-down safeties. They are 11-gauge steel and lock with a clevis quick-release pin. More in REP PR-1000 and PR-1050

REP's page names the PR-1000 and PR-1100; the PR-1050 is not mentioned, so ask REP before ordering. More in REP PR-1000 and PR-1050

REP lists 3 in hole spacing on the PR-1100, with 2x2 in 14-gauge uprights. The PR-1000 has 2 in spacing. More in REP PR-1100

Neither maker lists that pairing. Garage Gym Experiment reported that T-2 accessories relying on lock-in pins did not fully work on a PR-1100: roller J-cups fit, but their lock-in pins could not be used as intended. Treat that as one reviewer's report, and never use an attachment whose lock cannot be installed. More in REP PR-1100

REP says it adds 10 in of depth and 17 in of width to a PR-1000 or PR-1100. More in REP PR-1100

REP's rack guide gives 5/8 in hardware, which is a pin and bolt class, not a hole diameter. A 2020-era REP ISO arm FAQ says the PR-4000 version of those arms fits an 18 mm hole; it is an older document, so treat it as that FAQ's figure. More in REP PR-4000

Not automatically. REP lists the PR-4000 with 5/8 in hardware and the PR-5000 with 1 in hardware. Some parts, such as the flip-down safeties, the drop-in dip and the dip station, list both racks. More in REP PR-4000

CPSC recall 21-721 of February 2021 covered about 1,940 PR-4000 and PR-5000 strap safety brackets sold on repfitness.com from April to December 2020. Owners were offered free replacement brackets. More in REP PR-4000

REP's rack guide gives 1 in hardware, a pin and bolt class. A 2020-era REP ISO arm FAQ says the PR-5000 V2 version of those arms fits a 27 mm hole; that figure is scoped to the V2. More in REP PR-5000

REP lists the PR-4000 with 5/8 in hardware and the PR-5000 with 1 in hardware, and its Round Sandwich J-cups are a 4000 Series part with 5/8 in pins. Choose the 5000 Series version of a part for a PR-5000. More in REP PR-5000

CPSC recall 21-721 of February 2021 covered about 1,940 PR-4000 and PR-5000 strap safety brackets sold on repfitness.com from April to December 2020. Owners were offered free replacement brackets. More in REP PR-5000

Titan gives it as 26 mm in its spec table and as 1 in in its description. 26 mm calculates to about 1.024 in, so the 1 in wording is a rounded label. More in Titan T-2 Series

Titan's sources disagree: its product page and comparison chart say 14-gauge, and its T-2 support answers say 12-gauge. Ask Titan if the figure matters to you. More in Titan T-2 Series

Titan says its T-2 Series Adjustable Monolift Attachments are not compatible with T-2 Series Power Racks made before October 2020. Check your rack's build date first. More in Titan T-2 Series

Titan support says the lowest and highest hole heights for the T-2 and T-2 Short are not currently available in general, but it gives 1593.5 mm for the top J-hook hole on the T2RACK83_BK model. More in Titan T-2 Series

Titan lists 11/16 in holes on the T-3 and states a 5/8 in pin for its T-3 J-hooks (JHOOK_T3). The hole and the pin are separate figures; use the pin Titan supplies with each part. More in Titan T-3 Series

Titan says its X Dip Bar is not compatible with the T-3 Tall Folding Power Rack (41 in depth, V2), while the T-3 Y Dip Bar is. More in Titan T-3 Series

Titan lists Westside spacing through the bench and clean-pull zone, 2 in spacing above and below, and side holes every 6 in along the whole upright. More in Titan T-3 Series

For the T-3 24 in flip-down safety, Titan says the gap is intentional because the bar could not be installed or flipped down without it. That answer covers that model only. More in Titan T-3 Series

No. Titan says its T-3/X-3 rack stabilizer feet do not fit X-3 Series Flat Foot racks because the hole spacing does not match. They are listed for T-3 and X-3 bolt-down racks, excluding racks bought before October 2021. More in Titan X-3 Series

Titan support says its non-folding racks bolt to the floor except the X-3 Flat Foot style, and it gives 3/8 x 3 in lag bolts or concrete sleeve anchors only for the bolt-down X-3. Follow Titan's manual for your model. More in Titan X-3 Series

Titan sells 24 and 36 in versions for X-3 bolt-down racks and a 30 in version for X-3 Flat Foot racks. The pin is labeled 5/8 in (16 mm) and 34 in long. More in Titan X-3 Series

Titan's rack comparison chart lists 1 in keyholes on 3x3 in 11-gauge uprights. The chart gives no keyhole drawing or size for the smaller section. More in Titan TITAN Series

Titan lists a bolt-on pair with 50 mm sleeves, 11.25 in of loadable length and a 330 lb rating per sleeve, for TITAN Series power racks only. More in Titan TITAN Series

Bells of Steel labels its 60 x 60 mm tubing 2.3 x 2.3 in. Calculated from 25.4 mm per inch, 60 mm is about 2.362 in, so 2.3 in is a rounded label, not a measurement. More in Bells of Steel 60 mm racks

Neither maker says so in the sources we read. Both use 60 mm tubing, but Bells of Steel labels it 2.3 in and Force USA 2.4 in, and a shared size or label does not establish cross-brand fit. More in Bells of Steel 60 mm racks

For its Hydra standard J-cups, Bells of Steel says they fit non-Bells of Steel racks with true 3x3 in uprights and 5/8 in holes. That is Bells of Steel's condition, and its warranty excludes parts not made or sold by Bells of Steel. More in Bells of Steel Hydra

Bells of Steel says Hydra attachments fit Manticore racks through the keyholes, though they may lift slightly when pushed upward. It calls a Manticore attachment on a Manticore rack the most stable fit. More in Bells of Steel Hydra

Bells of Steel lists 1,000 lb combined for the Hydra Sandwich J-cups. It does not say whether that is a static or dynamic figure, and states no locking method for the Hydra version. More in Bells of Steel Hydra

Bells of Steel says yes, through the keyholes, which combine a 1 in and a 5/8 in opening, though Hydra parts may lift slightly when pushed upward. It calls a Manticore attachment on a Manticore rack the most stable fit. More in Bells of Steel Manticore

Bells of Steel lists 1 in holes on 3x3 in tubing, combined with a 5/8 in opening so its Hydra attachments can pin in. More in Bells of Steel Manticore

Bells of Steel lists included quick-locking mag pins for the Manticore Sandwich J-cups. It is the only Sandwich J-cup version that states a locking method. More in Bells of Steel Manticore

PRx says Profile ONE spotter arms fit only 2x3 Profile ONE and Fold-In ONE racks, while Profile PRO spotter arms fit 3x3 Profile PRO racks. Order the arms PRx lists for your model. More in PRx Profile ONE, PRO and CORE

PRx lists 5/8 in holes on 11-gauge 3x3 in uprights, spaced 2 in on the front and 4 in on the side. More in PRx Profile ONE, PRO and CORE

PRx's attachment article does not say. Check PRx's manual or ask PRx for your model. More in PRx Profile ONE, PRO and CORE

Force USA does not publish one on the MyRack page. It lists accessory holes of 5/8 in (16 mm); ask Force USA for the pin size before buying a third-party attachment. More in Force USA MyRack

Both: Force USA lists the uprights as 2.4 in square (60 mm). Calculated from 25.4 mm per inch, 60 mm is about 2.362 in, so 2.4 in is a rounded label. More in Force USA MyRack

Powertec says its Premium J-hooks fit only Powertec power racks and half racks with 2 3/8 x 2 3/8 in uprights and are 'Not designed for non Powertec products.' More in Powertec power racks and half racks

Powertec lists a 1 in peg for its Premium J-hooks. It publishes no load rating for them. More in Powertec power racks and half racks

Sunny lists a 3/4 in hardware peg hole diameter on the SF-XF9933 half rack. Calculated from 25.4 mm per inch that is 19.05 mm; it is not a 5/8 in or 1 in hole. More in Sunny Health & Fitness Power Zone racks

Sunny's overview names the SF-XF9925, SF-XF9931, SF-XF9933, SF-XF921041 and SF-XF920063, and its spec table adds the SF-XF920020, SF-XF921024 and SF-XF922059. The two lists differ, so confirm with Sunny if your model is on only one. More in Sunny Health & Fitness Power Zone racks

Sunny rates it for up to 330 lb of user weight. Its warranty is 1 year on the structural frame and 180 days on other parts. More in Sunny Health & Fitness Power Zone racks

No. Calculated from 25.4 mm per inch, 2 in is 50.8 mm, so a 2x2 in upright is not the same size as a 50 x 50 mm tube. The 0.8 mm gap says nothing about whether a part fits. More in 2x2 in uprights

No. REP and Titan list different spacing and pin or hole figures, and REP says it does not guarantee compatibility with other companies' products. One reviewer found Titan T-2 lock-in pins could not be used as intended on a REP PR-1100. More in 2x2 in uprights

Synergee offers its 2x2 safety straps only in 23 in inside depth and tells buyers to measure the rack's inside depth to choose a length. More in 2x2 in uprights

Not as a rule. Makers sell separate versions by upright size; Synergee, for example, sells 2x2, 2x3 and 3x3 versions of its J-cups. Choose the version for your upright and hole size. More in 2x3 in uprights

It depends on the maker. Titan lists 11/16 in holes on the T-3 and a 5/8 in pin for its T-3 J-hooks; Rogue gives a 5/8 in pin for Infinity J-cups but no hole size. More in 2x3 in uprights

It depends on the rack. Look at your uprights, note whether the holes are on the 2 in or the 3 in face, and buy the version the attachment maker names for that layout. More in 2x3 in uprights

No. Calculated from 25.4 mm per inch, 3 in is 76.2 mm, so a 3x3 in upright is 1.2 mm larger per side than a 75 x 75 mm tube by label. That difference is not a fit tolerance. More in 3x3 in uprights

No. 3x3 racks come with 5/8 in or 1 in hardware, and makers limit fit further: Rogue lists its Monster spotter arms only for Monster Series units, and REP says it does not guarantee compatibility with other companies' products. More in 3x3 in uprights

Check the maker's spec first: REP lists 5/8 in hardware on the PR-4000 and 1 in on the PR-5000, and Rogue lists 5/8 in on the SML-2 and 1 in on the RM-6. Then measure a hole on your own upright. More in 3x3 in uprights

Bells of Steel's 2.3 in and Force USA's 2.4 in labels both describe 60 mm tubing, which calculates to about 2.362 in. The same size does not mean parts cross between the two brands. More in 60 mm uprights

None of the makers in our sources say so. 2 in calculates to 50.8 mm, so a 2x2 in tube and a 60 mm tube are different sizes; buy parts the maker lists for 60 mm racks. More in 60 mm uprights

No. Calculated from 25.4 mm per inch, 3 in is 76.2 mm, so a 75 mm tube is 1.2 mm smaller per side by label. That difference is not a fit tolerance. More in 75 mm uprights

A 2020-era REP ISO arm FAQ says its arms fit 75 x 75 mm REP racks, while REP's rack guide lists the PR-4000 and PR-5000 as 3x3 in. The FAQ is generation-specific. More in 75 mm uprights