Shortlist · J-cups and J-hooks
J-cups for 2x2 and 2x3 uprights with the pin size stated
Approved J-cups and J-hooks for 2x2 and 2x3 in uprights whose maker states the pin or hole size, a rating and the racks it fits, with the variant to choose.
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Short answer
Four approved J-cup pairs for 2x2 and 2x3 in uprights state their pin or hole size and a rating. Synergee covers both tube sizes with a converter for 5/8 in or 1 in holes. Titan's T-3 J-hooks are for T-3 racks, Fringe Sport's 2x3 pair is for racks with 5/8 in hardware, and Sunny's J-hooks are for the Powerzone racks Sunny names.
How we chose
A pair is on this list only if:
- The maker states the upright and the pin or hole size, or names the racks. On 2x2 and 2x3 tubing, pin sizes vary more than the tube suggests. REP makes its 1000 Series standard J-cups for 2x2 in uprights with 1 in pins,[1] and Sunny lists a 3/4 in hardware peg hole on its SF-XF9933 half rack.[2] Rogue says its Infinity J-cups fit only its own 2x3 Infinity and R-Series units with 5/8 in pins.[3]
- The maker states a load rating, and we keep its scope. Synergee rates a pair at 750 lb combined with both cups at equal heights.[4] Where a maker does not say per cup or per pair, we say so.
- The maker states the pin or lock that holds the cup. Titan states a 5/8 in pin for its T-3 J-hooks.[5]
- It is in our approved catalog with a store listing.
2x2 or 2x3 J-cups for 5/8 in or 1 in holes
Synergee J-Cups, pair (2x2, 2x3 or 3x3; 5/8 in or 1 in converter)
Pick it if: Owners of 2x2 or 2x3 in racks with 5/8 in or 1 in holes who want sizes and a rating stated by the maker
- Why it's here
- Synergee sells 2x2 and 2x3 versions of its J-cups with a metal converter so one pair can be set up for 5/8 in or 1 in holes, rates the pair at 750 lb combined with both cups at equal heights, and lists a 3.3 in resting shelf on these sizes.
- Watch out
- Synergee names upright and hole sizes, not rack models. The 2x3 NC version takes 5/8 in holes only; confirm the converter is in the version you select. The 750 lb is for the pair at equal heights. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or Synergee.
- Upright outer size
- 2 x 2 in · 2 x 3 in · 3 x 3 in
- Hole diameter
- 5/8 in, or 1 in with the converter version; 5/8 in only on the no-converter versions
- Hole spacing pattern
- Not stated
- Locking pin diameter and position
- 5/8 in peg (1 in with the metal converter sleeve), locked with a rear tension knob; peg position not stated
Values are the manufacturer's specs unless marked.
J-hooks made for Titan T-3 racks
Titan Fitness T‑3 Series J-Hooks, pair (SKU 401348)
Pick it if: Titan T-3 owners replacing or adding J-hooks
- Why it's here
- Titan lists these J-hooks for its T-3 Series racks with 2x3 in uprights, states a 5/8 in pin for them in its support answers, and gives a 2,600 lb combined capacity per pair. The hook pins in and rotates down, and the shelf is lined with UHMW.
- Watch out
- Listed for T-3 racks only. Titan's warranty covers the original retail purchaser who bought directly from Titan, so check with Titan before relying on it for a marketplace purchase. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or Titan.
- Upright outer size
- 2 x 3
- Hole diameter
- 11/16Seller claim
- Hole spacing pattern
- Not stated
- Locking pin diameter and position
- Pin goes into the upright and the hook rotates down; Titan support lists a 5/8 in pin for JHOOK_T3 (R147)
Values are the manufacturer's specs unless marked.
2x3 J-cups for racks with 5/8 in hardware
Fringe Sport J-Cup 2x3 pair (JCup-FS-Steel-Pair)
Pick it if: Owners of 2x3 in racks with 5/8 in hardware
- Why it's here
- Fringe Sport lists this pair for 2x3 in steel racks that take 5/8 in hardware, with a 16.5 mm pin and a 1,000 lb weight capacity per pair.
- Watch out
- Fringe excludes its own Garage Series Squat Rack with Pull Up Bar ordered June to October 2020, and states no lock beyond the mounting pin. It names no other rack models, so compare your rack maker's hole size first. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or Fringe Sport.
- Upright outer size
- 2 x 3
- Hole diameter
- Racks that take 5/8 in hardware
- Hole spacing pattern
- Not stated
- Locking pin diameter and position
- 16.5 mm pin
Values are the manufacturer's specs unless marked.
J-hooks for named Sunny Powerzone racks
Sunny Health & Fitness J-Hooks barbell holder, 2‑piece set (SF‑XFA007)
Pick it if: Owners of the Sunny Powerzone racks Sunny names
- Why it's here
- Sunny lists these J-hooks for its Powerzone SF-XF9925, 9931, 9933, 921041, 920020 and 920063 racks, with 2x2 in columns, a 0.79 in bolt and safety latches, and says they hold up to 1,000 lb.
- Watch out
- For the named Sunny racks only. Sunny does not say whether 1,000 lb is per hook or per pair. Sunny's SF-XF9933 page lists a 3/4 in peg hole while the J-hook listing gives 0.79 in, so confirm with Sunny if your rack is not named. On Amazon, check that 'Ships from / Sold by' shows Amazon.com or Sunny Health & Fitness.
- Upright outer size
- 2 x 2
- Hole diameter
- 0.79
- Hole spacing pattern
- Not stated
- Locking pin diameter and position
- 0.79 in bolt diameter; safety latches (no further detail)
Values are the manufacturer's specs unless marked.
Fit at a glance
| Pair | Upright | Holes or pin | Rating as stated | Racks named |
|---|---|---|---|---|
| Synergee J-Cups, 2x2 or 2x3 | 2x2 or 2x3 in | 5/8 in or 1 in holes (converter versions) | 750 lb per pair, combined, equal heights | None; sizes only |
| Titan T-3 Series J-Hooks | 2x3 in | 5/8 in pin | 2,600 lb combined per pair | Titan T-3 |
| Fringe Sport J-Cup 2x3 | 2x3 in | 5/8 in hardware, 16.5 mm pin | 1,000 lb per pair | Excludes one 2020 Fringe rack |
| Sunny SF-XFA007 J-Hooks | 2x2 in | 0.79 in bolt | 1,000 lb, scope not stated | Named Sunny Powerzone racks |
A note on Titan's figures: Titan lists 11/16 in holes on the T-3 rack[6] and a 5/8 in pin on the J-hooks.[5] The hole and the pin are different numbers by design; neither should be swapped for the other.
Also made for these sizes, not yet in our catalog
REP's 1000 Series standard J-cups fit the PR-1000, PR-1050 and PR-1100 and carry a 700 lb rackable capacity.[1] Rogue's Infinity J-cups fit its Infinity and R-Series units only.[3] See the 2x2 and 2x3 J-cup guide and the J-cups hub.
Questions
Will 2x3 J-cups fit my 2x3 rack from another brand?
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.[3]
Do 2x2 racks always use 5/8 in pins?
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.[1][2]
Is a 2x2 in upright the same as 50 mm?
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.[9]