You get a hold of a great power rack or squat rack, but then you find out that the company doesn’t make the attachments / accessories that you want.
No problem! You should be able to find a compatible attachment or accessory, as long as your rack is made with one of a few standard configurations.
Table of Contents
Compatibility
The key specs are:
- The tubing size of the uprights, typically one of: 2″x2″, 2″x3″, or 3″x3″.
- The hardware/peg diameter that fits into the holes in the uprights.
- The hole spacing in the uprights, ie: the distance between holes on center. This is only an issue for larger attachments that use 2 holes, with a peg and a locking pin. 2″ spacing is becoming the standard. Some racks have Westside spacing, which is 1″ spacing at a certain height range for setting bench press safety bars just right, and otherwise 2″ spacing above and below that.
2020 Update: This guide used to denote the hole size in the uprights. I have changed everything to the peg diameter, which is always a little smaller than the hole size. The peg size is also usually the hardware (bolt) size used on connecting points. There are only a few sizes of pegs used across all brands (1/2″, 5/8″, 3/4″ or 1″), so this gives cleaner numbers and eliminates confusion.
When Slightly Wrong Sized Attachments are Ok
An attachment can fit in a larger hole than it’s made for, but it will be able to wiggle and tip down a little, depending on the bracket that goes over the tubing.
Similarly, attachment brackets can fit onto slightly smaller tubing than what they were designed for. This can be less bad than the wrong peg size, because you can glue shims (UHMW plastic is best) to the inside of the attachment’s bracket to make it fit.
Some attachments work well enough even if they’re loose. Some don’t have enough pressure put on them to make a safety issue, like a rope anchor, but it could still rattle.
The steel gauge (wall thickness) of rack tubing does not factor in. The tubes are fabricated to match the right outside diameter.
When You Should Not Use the Wrong Sized Attachments
I don’t recommend you use certain safety-critical attachments that don’t fit quite right, such as J-hooks, steel safety arms, or plate holders, unless you have a good way of retrofitting it to be snug enough. Use some common sense, visualize it, and you’ll get the idea.
I’ve listed a few brands in some tables. Rogue has among the best and most consistent quality. Cheap Amazon-only brands, which I don’t like to list unless there are no other options, are the worst and might be unsafe. Most other brands are somewhere in the middle.
List of Power Rack Attachments by Size
Not listed here are complex attachments and accessories that will not fit any other racks, such as those that mount on the top or bottom crossmembers or need the rack to be a specific width between uprights. Examples are special pull up bars or rack extensions.
The size categories below are ordered smallest to largest.
2×2 Tubing, 1/2″ Pegs
Rogue Echo / ES-1 / Wall Mount
| Rogue Echo J Cups |  | $45.00 |
2×2 Tubing, 5/8″ Pegs
Titan X-2* (discontinued), Powerline PPR1000, Northern Lights Crossbox
* The Titan Fitness X-2 used 50x50mm tubing, which is 1.97″x1.97″.
Titan also used metric hole spacing, 50mm/1.98″ instead of 2″. The second hole on their attachments that use two holes (with a hitch pin) will not line up quite right on other racks.
| Powerline Landmine Base |  | $21 |
| Powerline Battle Rope Anchor |  | $21 |
| Powerline Weight Horn |  | $17 |
| Rogue Landmine |  | $95.00 |
| Also, the Titan T-3 Multi Grip Pull Up Bar is compatible with the Titan X-2 racks (thanks TJ!). |
2×3 Tubing, 3/4″ Pegs
Sunny Health & Fitness Power Zone Power Cage
No other brands match this size. If another one does, I’ll list attachments here.
The attachments in the 2×3, 5/8″ peg section above should fit this rack well enough.
2×2 Tubing, 1″ Pegs
Powerline PPR200X / PPR500, Best Fitness BFPR100, Valor BD-7 / BD-33, Amstaff DF1161A / TP006D, Rep Fitness PR-1000 / PR-1050 / PR-1100, Fringe Squat Cage, Legend Fitness Varsity Series, Get Rx’d Pro Power Cage, Vanswe Power Rack, TDS 1000lb Power Squat Rack, Fitness Reality 810XLT, Titan Fitness T-2*
* The Titan Fitness T-2 uses 50x50mm tubing, which is 1.97″x1.97″. Their attachments are generally made large enough that they are compatible with 2×2 tubing.
As of October 2020, the Titan T-2 moved from 50mm (1.98″) hole spacing to 2″ hole spacing, and all their attachments that use 2 holes with a hitch pin were changed to fit. This makes it more compatible with other brands.
| Rep Dip Attachment |  | $79.99 |
| Rep J-Cups Pair |  | $49.99 |
| Rep Landmine (fits any rack that will take 5/8″ or larger pegs) |  | $89.99 |
| Rep Plate Storage Pair |  | $29.99 |
| Titan Adjustable Monolift |  | $199.99 |
| Titan Safety Straps Pair fits 26″ inside depth |  | $129.99 |
| Titan Dip Bars Pair |  | $69.99 |
| Titan Y-Dip Bar |  | $79.99 |
| Titan J-Hooks Pair |  | $49.99 |
| Titan Roller J-Hooks Pair |  | $79.99 |
| Titan Sandwich J-Hooks Pair |  | $74.99 |
| Titan 23″ Spotter Arms Pair |  | $89.99 |
| Powerline Rope Anchor |  | $24.00 |
For more on the strap safeties used as an alternative to traditional steel safety bars, see our article, Are Power Rack Safety Straps Safe?
60x60mm (2.36″) Tubing, 1/2″ Pegs
ForceUSA MyRack only.
Although no other brand is directly compatible, these may fit the Bells of Steel racks in the next section well enough.
| ForceUSA Plate Holders (4) |  | $49.99 |
| ForceUSA Deluxe J-Hooks Pair |  | $79.99 |
| ForceUSA J-Hooks Pair |  | $49.99 |
| ForceUSA Dip Attachment |  | $79.99 |
| ForceUSA Landmine Base & Handle |  | $79.99 |
| ForceUSA Spotter Arms Pair |  | $99.99 |
| ForceUSA Strap Safeties Pair fits 29″ inside depth |  | $99.99 |
| ForceUSA Monolift |  | $199.99 |
60x60mm (2.36″) Tubing, 5/8″ Pegs
Bells of Steel Residential Rack / Utility Rack / Light Commercial Rack / Brute Rack / Narrow Folding Rack / Combo Rack
| BoS J-Cups Pair |  | $59.99 |
| BoS Sandwich J-Cups Pair |  | $59.99 |
| BoS Plate Storage Pegs Pair |  | $44.99 |
| BoS Roller J-Cups Pair |  | $69.99 |
| BoS Landmine Base |  | $69.99 |
| BoS Y Dip Bar |  | $99.99 |
| BoS Spotter Arms |  | 119.99 |
| BoS Lever Arms |  | $199.99 |
| BoS Monolift |  | $229.99 |
| BoS Belt Squat |  | $308.00 |
60x60mm (2.36″) Tubing, 1″ Pegs
Powertec P-PR / WB-PR, Hulkfit
Several attachments are available – I’ll create a list soon.
2.5×2.5 Tubing, 1″ Pegs
Valor BD-11 / BD-41, Amstaff TR023 / TR025 / SD1050
| Valor 12″ Safety Arms MB-H |  | $65.00 |
| Valor Premium Bar Holders MB-G |  | $45.00 |
| Valor Dip Handles MB-B |  | $59.00 |
| Fitness Avenue J-Cups Pair |  | $29.15 |
2×3 Tubing, 1/2″ Pegs
BodyCraft F430
| BodyCraft J-Hooks |  | $70.00 |
2×3 Tubing, 5/8″ Pegs
Rogue R-Series / Infinity, FringeSport Kip Cage / 2×3 rigs, Bolt Fitness Thunder / Lightning racks, Titan Fitness T-3* / T-6* (discontinued)
* The Titan Fitness T-3 and discontinued T-6 use 50x75mm tubing, which is 1.97″x2.95″. Their attachments are generally made large enough that they are compatible with 2×3 tubing.
Update 2021: Old versions of the Titan T-3 used 50mm (1.98″) hole spacing. It has been changed to 2″ hole spacing, making other brands using two holes and hitch pin compatible with it. However, I was unable to get Titan to tell me the approximate date or even the year of the change.
| Rogue Monolift with Infinity retrofit kit |  | $362.40 |
| Rogue J Cups Pair |  | $70.00 |
| Rogue 20″ Spotter Arms |  | $145.00 |
| Rogue Matador |  | $90.00 |
| Rogue Landmine | | $95.00 |
| Rogue Plate Storage |  | $30.00 |
| Rogue Battle Rope Anchor |  | $30.00 |
| Rogue Wrenches (15/16″ wrenches fit the head of a 5/8″ bolt) |  | $25.00 |
| Fringe 24″ Safety Spotters Pair |  | $116.00 |
| Fringe J Cups Pair |  | $98.00 |
| Fringe Dip Bar |  | $104.00 |
| Titan J-Hooks Pair |  | $59.99 |
| Titan Sandwich J-Hooks Pair |  | $79.99 |
| Titan Roller J-Hooks Pair | | $89.99 |
| Titan Safety Straps Pair fits 24″ or 36″ inside depth |  | $109.99 |
| Titan 21″ Spotter Arms Pair |  | $99.99 |
| Titan Adjustable Lever Arms |  | $199.99 |
| Titan Dip Bars Pair |  | $54.99 |
| Titan Y-Dip Bar |  | $89.99 |
| Titan Plate Storage 4-Pack |  | $80.97 |
| Titan Step Up Platform |  | $69.99 |
2×3 Tubing, 1″ Pegs
Currently only the Fitness Reality X-Class Light Commercial rack fits this spec.
50x80mm (1.97″x3.15″) Tubing, 5/8″ Pegs
Rep Fitness PR-3000 (discontinued)
3×3 Tubing, 5/8″ Pegs
Rogue Monster Lite, Rep Fitness PR-4000*, Titan X-3*, Body Solid GPR400 / SPR500 / SPR1000**, Vulcan Flat Base Power Rack
* The Titan Fitness and Rep Fitness racks use 75x75mm tubing, which is 2.95″x2.95″, or about 1 millimeter difference. Their attachment brackets are generally made large enough that they are compatible with 3×3 tubing except as noted.
Update 2021: Old versions of the Titan X-3 used 50mm (1.98″) hole spacing. It has been changed to 2″ hole spacing, making other brands using two holes and hitch pin compatible with it. However, I was unable to get Titan to tell me the approximate date or even the year of the change.
Rep still uses metric hole spacing, and it is 50mm/1.98″ instead of 2″. The second hole on their attachments that use two holes (with a hitch pin) will not line up quite right on Rogue and other racks.
** The Body Solid SPR1000 takes 5/8″ pegs facing the front/back, and 3/4″ pegs on the sides. Many of its attachments are made to fit the side holes, which are incompatible with any other racks.
Mark Buffalo wrote a guide on how to fit the Titan X-3 lat pulldown on a Rogue Monster Lite rack.
3×3 Tubing, 3/4″ Pegs
American Barbell racks, EliteFTS Collegiate / R3
See the 3×3, 5/8″ section above for more reasonably priced attachments that will fit well enough.
3×3 Tubing, 1″ Pegs
Rogue Monster, Vulcan Strength Racks (most), Ethos Power Rack, Amstaff 370, Fringe 3×3 rig, Valor rig, Legend Fitness Performance Series, EliteFTS Scholastic / Garage Racks, Get Rx’d Titan rigs / Goliath rack, Fray Fitness FFB2, Sorinex XL, Bolt Fitness Storm Series, XM Fitness 365 Infinity Power Rack, Precor Inspire SCS Power Rack, PRx Pro, Prime Prodigy, eliteFTS Quick Ship Power Rack, Titan’s TITAN Series*, Rep Fitness PR-5000* / CPR1* / HR-5000*
* The Titan Fitness, Rep Fitness, and Griffin Fitness racks use 75x75mm tubing, which is 2.95″x2.95″. Their attachments are generally made large enough that they are compatible with 3×3 tubing. There have been reports of Titan’s all-steel J-cups and UHMW-lined J-cups not fitting over 3×3 tubing, but their other attachments should fit.
Rep also uses metric hole spacing, and it is 50mm/1.98″ instead of 2″, making them incompatible with most other brands when it comes to attachments that use a second hole and hitch pin.
Update 2021: Old versions of Titan’s TITAN racks used 50mm (1.98″) hole spacing. It has been changed to 2″ hole spacing, making other brands using two holes and hitch pin compatible with it. However, I was unable to get Titan to tell me the approximate date or even the year of the change.
Universal Fit
For a lat pulldown / low row cable system that works on almost any power rack, see the Spud Inc Pulley System shown above.
This Rep Fitness dip attachment above fits on almost any rack with 1″ round safety bars (thanks Anthony!). The rack needs to have at least 21″ depth between the front and back uprights, which is the case for all freestanding racks and most floor-mounted racks except the most shallow ones. The rack’s hole spacing does not matter, as the bottom part of the attachment simply rests against wherever the lower safety bar is.
General Recommendations
For the best compatibility going forward, I highly recommend getting a 3×3 rack taking 5/8″ pegs or 1″ pegs, compatible with Rogue Monster Lite or Monster, respectively. Other companies try to fit those sizes to be compatible.
Rogue appears to be in the beginning stages of abandoning their 2×3 racks in favor of 3×3. Other manufacturers have noticed and likely will follow suit. This doesn’t mean that nobody will make racks with 2×2 or 2×3 tubing. I believe that there will be a market for those lighter and cheaper racks for a long time, and they are not necessarily bad racks. The 3×3 attachments sell much better and are more numerous, because people who spend the extra money for a 3×3 rack are more likely to soup it up.
As mentioned about specific brands in the charts above, steer clear of racks that have metric sized tubing that is not truly 3×3 inches even though that might be what they advertise.
Why are the PRX Pro hole spacings so random? Some holes are 5/8 some 1″, some holes are the same height on all sides, some holes are offset. Are they trying to fit specific equipment? There are no accessories on their site that need that kind of offset and hole sizing.
The holes on the sides of PRX’s tubing I think are just for moving the pull up bar and frame attachment points. For extra attachments the peg should go through front to back. As far as that goes for the holes in the front, the range of tightly spaced holes are Westside style spacing, where you might need finer tuned adjustments for J cups and safety bars for bench pressing, and outside of that range for squats and other exercises the tight spacing isn’t really needed.
Do you know of a multi-grip pull up bar besides the “T-2, T-3, or X-3 Series Multi-Grip Pull-Up Bar” that would be compatible with the T3?
This one:
https://www.titan.fitness/racks/rack-accessories/t-2-t-3-or-x-3-series-multi-grip-pull-up-bar/401360.html
has been out of stock every time I’ve searched.
I saw a comment on the Titan website where a guy said he bought the “Titan Series” multi grip pullup bar for his T3 but Titan told me it wouldn’t fit.
I ran into the same issue. I ended up going with the sphere grip bar + dual pull-up stabilizer. Cost a lot more, but ultimately more versatile. The sphere grips added a lot of forearm definition for me, and the dual stabilizer bar is great for use with inversion boots, very easy to mount and dismount.
New York Barbell manufactures some of their own, as well as sells other manufacturer attachment for 2×2 1″ hardware posts. I’m waiting on them to get some stock this August.
Do the Rogue LT-1 Trolley and Lever arms fit with the PRX Pro Rack? Thanks
I have the old version of Titan’s X-3 rack with 5/8″ holes. I was waiting for the 24″ extension kit to come back in stock to turn my rack into a 6 post, but they never came back in stock. I reached out to titan to see if the new version of the extension kits would fit on an older version of the X-3, but they confirmed it wouldn’t.
Does anyone know where I can get some uprights and crossmembers that would fit the old version of the X-3?
It’ll likely fit with shims. Worse comes to worst, shouldn’t be hard to just drill holes for the cross members. If you’re not going to use pin pipe safeties on the extension portion, shouldn’t matter if holes don’t line up.
Hi David,
Thank you for your great guide. I had a question about the Monster Light Wall Mount Kit (link at bottom). I have a Rep PR-4000 and want to use this kit to mount my rack to the wall instead of bolting down. From what I can tell there might be an issue because of the width of my rack. The stringer this come with has 2 hole options to attach the wall mounts into. From what I understand Rep racks are 47” inches wide and Rogue racks are 49” wide. Any idea if this would be compatible?
https://www.roguefitness.com/monster-lite-rack-wall-mount-kit
Do you know if the 11/16 inch Titan Fitness 4 Pack Bolt-On Weight Plate Holder Attachments Fits X-3 and T-3 Series Power Rack, Weight Plate Storage will fit the 1 inch hole and 3×3 upright of the new Inspire Full Power Cage?
I bought the weight plate holders because a guy on the Costco reviews website said that the weight plate holders from Titan for the X3 fit the Inspire Fitness Full Power Cage but I now know that the hardware for the weight plate holder is 5/8 inches and was built for the X3 which has 11/16 inch holes and not 1 inch holes like the Inspire Full Power Cage has .
Titan recommended I buy their Titan Rack weight plate holder where the bolts are 1 inch wide but don’t the bolts have to be slightly smaller that the hole on the cage?
The Titan representative told me the Titan Rack holes are 1.02 inches wide.
I am perplexed.
Any help would be great
thanks!
Anyone have options for safety straps for a Rep PR-1000 power rack (3/8″ pin holes)? Looks like the Titan T-2 series 26-in straps are compatible (based on this article), but they’re sold out now. Any other options? Looks like most things are 5/8″ pins…
Anyone know if the rogue monster trolley arms fit on Rep 5000v2 racks?
I think you left the Titan T3 Spotter arms for rigs with 2X3 tubing and 5/8 holes.
https://www.titan.fitness/racks/rack-accessories/t-3-series/t-3-series-spotter-arms/401093.html
Or I am wrong? I have a ordered a PRX Foldable Murphy rack 2×3 and holes are 5/8.
https://prxperformance.com/products/murphy-rack
PRX Spotter arms are $150 plus shipping and Titan is $99 and free shipping.
By Looking at the other accessories, it seems the T3 accesories will fit 2X3 5/8 holes rigs…
Added the Titan spotter arms, thanks! I don’t know why I didn’t have them on there.
I will start adding more attachments that use 2 holes, because Titan has now gotten in line with the exact 2″ hole spacing.
So…you agree Titan T3 spotter arms will indeed fit the PRX Murphy Foldable??
Yeah should be good!
Does Rogue ES-1 need an update? The newer ones are 2×3 5/8″ holes. No westside space, but all holes are 2″ on center. That should make it compatible with Rogue Infinity attachments, right?
It looks like the ES-1 (Echo Squat Stand 2.0) uses 2×3 uprights and the Echo Power Racks still use 2×2. That’s going to make things confusing for a while. They’re saying the ES-1 is also 1/2″ hardware. So it doesn’t look compatible with either one.
https://www.roguefitness.com/rogue-echo-squat-stand-2-0
To add a little more confusion, it also says this: 0.625 holes spaced every 2″ (or 5/8″)
I think it’s 2″x2″ bases with 1″ hardware, and 2×3″ uprights with 5/8″ holes and 2″ spacing.
I just got the ES-1 2.0. The uprights are indeed 2×3 with 5/8 (.625) holes spaced every 2 inches on center. Infinity attachments (and retro-fit kits) are supposed to fit perfectly, and I would assume that Titan T-3 (I think that’s right?) attachments should all fit as well now that their holes are 2″ on center. The base of the rack is still 2×2″ tubes, and has 2 mounting holes on the front of either side of the base. I think the holes on the base are 1/2 inch, though, instead of 5/8.
Ok, but if the holes are 5/8″ then the hardware/pegs can’t be 5/8″. Rogue is making this confusing by suddenly giving hole size on the page instead of hardware size like they do with every other rack. Maybe they mean hardware size. Can you measure with calipers?
From Rogue’s description:
“…and now features the same 2×3″ 11-gauge steel uprights and protective UHMW J-Cups as the Infinity S-Series…
The 70.375″ uprights have 0.625″ holes spaced every 2″ on center on the front and back, and the base components and crossmember are constructed from 2×2″ 11 Gauge Steel, with 0.5″ hardware included.”
I don’t have calipers, unfortunately. But it seems like they’re giving a hole size for the uprights, and a hardware size for the base.(?)
I was wondering if the vulcan flat 3×3 flat foot rack is using metric measurements like Repfitness and if there accessories were compatible. I know that Roque stuff can go do both stuff but rep accessories do not fit well on Roque and I was wondering if Rep stuff would fit on the Vulcan flat foot
I believe the Vulcan racks are all exactly 3×3.