Guide · Rack-mount pulley systems
Pulley mount hole sizes: 5/8 in, 1 in and 1/2 in
Pulley mounts ship with bolts for one hole size. What Fringe, Surplus, Valor, Rogue and REP list for 5/8 in, 1 in and 1/2 in holes, and when to ask the maker.
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Short answer
A pulley mount ships with bolts for a stated hole size, usually 5/8 in or 1 in on home racks, and 1/2 in on some Valor gear. Find your rack's hole diameter, then buy a mount whose maker lists that size. If the sizes do not match, ask the maker; do not swap hardware.
Makers list the holes their mount fits
Each mount names the hole diameters it was built for:
- Fringe Sport Sidewing Bottom Pulley: 1 in or 5/8 in holes on metric 75 mm "3x3" tubing, 5/8 in holes on 2x3 tubing, and 1 in or 5/8 in holes on 2x2 tubing.[1]
- Surplus Strength UPS Low: racks with 1 in or 5/8 in holes, on a 3x3 or 2x3 lower crossmember.[2]
- Valor RG-26: two M12 x 110 bolts, designed for 1/2 in frame holes. Valor does not recommend other hole sizes unless the buyer supplies compatible hardware.[3]
Valor's note is not an invitation to improvise. If your holes are not 1/2 in, contact Valor and ask what it considers compatible before you buy.
Rogue's two Slingers use different bolts
Rogue's Monster Slinger mounts with two 1 in Monster bolt assemblies. The Monster Lite Slinger uses two 5/8 in bolt assemblies.[4][5]
Those bolts belong to each product and each rack family. Buy the Slinger that matches your rack, not the one whose bolts you can source.
REP: one brand, two hole sizes
REP says its 4000 Series racks use 5/8 in pinholes, with 1 in spacing in the bench zone and 2 in spacing elsewhere. Its 5000 Series uses 1 in pinholes with 2 in spacing throughout.[6]
The original PR-5000 was not uniform either. REP says the Ares 2.0 needs the updated PR-5000 with 1 in holes along the upright; the original had alternating 5/8 in and 1 in holes.[7]
Sizes in millimeters
One inch is exactly 25.4 mm, so 5/8 in is 15.875 mm and 1 in is 25.4 mm.[8] Half an inch is 12.7 mm. These are conversions, not tolerances. They help you read a metric spec sheet, but they do not tell you whether an M12 bolt suits a particular hole; only the maker can.
| Hole size | In millimeters | Mounts whose maker lists it |
|---|---|---|
| 5/8 in | 15.875 mm | Fringe Sidewing, Surplus UPS Low, Rogue Monster Lite Slinger (5/8 in bolts) |
| 1 in | 25.4 mm | Fringe Sidewing (75 mm and 2x2), Surplus UPS Low, Rogue Monster Slinger (1 in bolts) |
| 1/2 in | 12.7 mm | Valor RG-26 (two M12 x 110 bolts) |
Hole spacing matters too
A mount with two bolts needs two holes the right distance apart. Rogue lists the Slinger's mounting holes as 8 in on center.[4] Compare that figure with the spacing on your upright. REP's 4000 Series, for example, changes spacing between the bench zone and the rest of the upright.[6]
How to check your holes
- Look up your rack's specs or manual for the hole diameter and spacing.
- If the maker does not publish them, measure one hole across its widest point and the distance between hole centers.
- Send the model, year and your numbers to the pulley maker and ask for a yes or no.
Rack-specific towers
If you own a Titan T-3 or X-3 bolt-down rack, Titan sells towers for those racks by name, which takes the hole-size guesswork out of the order. Titan lists a 300 lb weight plate capacity for its T-3/X-3 lat tower and says it does not fit Flat Foot racks or racks bought before October 2021.[9]
Picks that fit2 products
Choose the Short lat tower (SKU 401035) for a Titan T-3 or X-3 Series bolt-down rack bought in or after October 2021.
More on choosing
Choose the Pulley Tower V3, Short 80.5 in, for a T-3, X-3 or TITAN Series bolt-down rack or a wall, not an X-3 Flat Foot rack; Titan says mounting hardware is not included and rates it for 350 lb. On Amazon, check that 'Ships from / Sold by' is Amazon.com or Titan.
Lat tower for Titan T-3 and X-3 bolt-down racks
Titan Fitness Short Lat Tower Rack Attachment, T‑3 and X‑3 Series Bolt-Down Power Racks
Pulley tower for a wall or Titan bolt-down rack
Titan Fitness Short Wall and Rack Mounted Pulley Tower V3 (80.5 in)
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Questions
Will a 1 in pulley mount work on a 5/8 in rack?
Only if its maker lists 5/8 in holes. Rogue's Monster Slinger uses 1 in bolt assemblies and the Monster Lite Slinger uses 5/8 in, so the two are not interchangeable.[4]
What size are my rack's holes?
Check your rack maker's specs or manual. REP, for example, says its 4000 Series racks use 5/8 in pinholes and its 5000 Series uses 1 in pinholes.[6]
Can I use different bolts to make a pulley mount fit?
Use only the hardware the maker supplies or states. Valor designs the RG-26's two M12 x 110 bolts for 1/2 in frame holes and does not recommend other hole sizes unless the buyer supplies compatible hardware; ask Valor what that means for your rack.[3]
How many millimeters is 5/8 inch?
Exactly 15.875 mm, since one inch is exactly 25.4 mm. That is a conversion, not a fit tolerance.[8]