Pick your power rack or rack-style functional trainer, or enter its upright and hole sizes. Explore the catalog and see which attachments are maker-listed, dimensionally matched, need another check, or are ruled out. Check the conditions on each result before ordering.
1. Your rack
Measure across the hole, not the pin. A caliper, or a drill bit from a set you know, settles it in a minute.
2. Attachments
Free printable PDF
Rack Attachment Fit Field Guide
Measure your uprights, holes and pins, check how an attachment locks in, and record it all on one sheet before you buy. Enter your email and the guide lands in your inbox.
What each fit result means
A dimensional match is a starting point. Check the attachment’s exact version, installation instructions and any unresolved measurements before ordering or using it.
| Result | What to do next |
|---|---|
| Listed for your rack | The maker names the rack line. Check the exact model, generation and installation requirements. |
| Sized to fit | The published dimensions match the rules checked by this tool. This does not establish manufacturer approval or verify every clearance. |
| Check before ordering | Resolve the conditions shown, such as inside width, rack depth, hole spacing or anchoring. |
| Add-on: needs a base unit | Confirm that you have the required compatible base attachment as well as a suitable rack. |
| Not listed: ask the maker | The tool cannot establish a listed match. Ask the attachment maker to confirm your exact setup. |
| Won’t fit | A checked requirement conflicts with the selected rack. Choose a compatible version or ask the maker about an approved alternative. |
Result categories explain the tool’s decision; they are not load tests or a substitute for the maker’s instructions. See rack specifications and manufacturer sources when comparing a different rack.
How the fit checker decides
Each result comes from what the attachment’s maker publishes. “Listed by the maker” means the maker names your rack line on the product page. “Sized to fit” means the attachment is sold in upright and pin sizes for any rack, and one of those sizes matches yours. “Check before ordering” means it matches on paper, but a requirement such as bolting down, inside width or rack depth has to be confirmed first. “Not listed” means the tube and hole size line up, but the maker doesn’t name your rack, so ask before you buy. “Won’t fit” means the upright size, hole size, width or depth rules it out.
Why upright size alone isn’t enough
Two racks sold as 3×3 can still take different attachments. Hole size is the usual reason: Rogue’s Monster Lite and REP’s PR-4000 use 5/8″ hardware, while Rogue’s Monster and REP’s PR-5000 use 1″. Titan’s X-3 and T-3 list 11/16″ holes, which take 5/8″ pins with a little play. Width, depth, model year and whether the rack is bolted down decide the rest. For the full background, read 5/8″ vs 1″ rack hole sizes.
Functional trainers in the checker
Many cable machines are built around a squat rack: the Mikolo, Major Fitness, RitFit and XMark all-in-ones, for example. Where the maker publishes the tube and hole size of those uprights, you can pick the trainer and check rack attachments against it just like a rack. A standalone trainer has no squat-rack uprights, so the checker tells you that pin-on rack attachments don’t apply. A trainer that bolts onto a rack, such as REP’s Athena, is checked through the rack it mounts on.
When a spec says “not published”
Several makers don’t publish inside width or depth for every rack. When that number decides the result, the checker tells you to measure rather than filling in an estimate. Measure the clear distance between the inner faces of your front uprights at the height the attachment will sit. Your tape measure is a better source than a product page that may not be current.
Related tools
Own Bulletproof gear? The Bulletproof Rack Attachment Compatibility Checker goes deeper on the ISOLATOR and VTS. Comparing racks or functional trainers before you buy? Use the Power Rack Comparison Tool to see specs side by side.