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Research-based buying guide · Specifications checked October 9, 2026.
What actually changes the decision?
| Decision | PR-4000 | PR-5000 |
|---|---|---|
| Uprights / rated rackable capacity | 3×3 in, 11-gauge / 1,000 lb | 3×3 in, 11-gauge / 1,000 lb |
| Hardware and hole grid | 5/8 in; 1 in in bench zone, 2 in elsewhere | 1 in; 2 in grid |
| Height choices | 80 or 93 in uprights | 80 or 93 in uprights |
| Current crossmember choices | 16, 24, 30 or 41 in | 16, 30 or 41 in |
| Nominal outside width | 50.8 in | 50.8 in |
| Numbering | Every fifth hole | Every hole |
| Best reason to spend more | Needed depth, adjustment or supported attachments | A specific 1-inch attachment ecosystem |
| Belt-squat compatibility | Match the 4000 attachment to a supported cable configuration; bare rack is insufficient. | Match the 5000 attachment and rack revision to the supported cable configuration. |
Considering belt squats? Expand the same-page compatibility checks and full setup basket after comparing the core rack decision.
PR-4000: closer adjustment in the bench zone
PR-5000: larger holes on a 2-inch grid
Manufacturer photographs with specification overlays. Photos are not to a common scale; dimensions come from REP’s published specifications, checked October 19, 2026. Accessories pictured are not necessarily included with the base rack.
Compatibility: same tube size is only the first check
| Check | What to record before buying |
|---|---|
| Rack series and version | PR-4000 or PR-5000, current or older component |
| Attachment interface | Pin diameter, hole centers, bracket fit and required adjacent holes |
| Cable system | Supported rack series, height, depth and post layout in the current builder |
| Anchoring and stability | Your exact manual: crossmembers, rear stabilizer, front feet and attachment use |
| Outside-rack work | Spotter arms, lever arms and pull-up attachments may change anchoring and space needs |
PR-5000 offset J-cups can provide intermediate bar positions without changing its 2-inch hole grid. Do not buy reducers or assume cross-brand fit from “3×3” alone. REP’s assembly requirements vary by configuration: a rear stabilizer does not make every 30-inch or outside-rack setup safe without anchoring. Follow the current installation manual for the complete configuration.
REP belt squat: expand exact compatibility and complete setup basket
REP belt squat attachment: fit and complete setup cost
The REP Belt Squat is a rack attachment, not a complete standalone belt squat machine. Choose the 4000 or 5000 version for a compatible PR-4000 or PR-5000 V2. Matching 3×3 tubing alone is insufficient. REP excludes Apollo and does not guarantee other brands.
| Your configuration | Required before buying | Purchase consequence |
|---|---|---|
| PR-4000 / PR-5000 V2 with supported lat/low row | Correct series/height lat-pulldown and low-row assembly plus rear base stabilizer; matching Belt Squat version and a belt. | Attachment takes resistance from the cable system; the bare rack is insufficient. |
| Compatible PR rack with Ares / Ares 2.0 | Match rack series, height, crossmembers and the exact cable setup. REP’s Ares 2.0 FAQ states it retains Belt Squat functionality. | Confirm installed clearances and cable routing. Do not transfer fit to a wall-mounted package. |
| Athena only, Apollo or another brand | Athena alone is not listed as the required lat/low-row or Ares system. Apollo is excluded. | Get written approval for the exact combination; do not buy from tube-size or pin-size matching alone. |
Known incremental cost for an already compatible rack and cable system: $309.99 attachment + $89.99 REP Belt Squat Belt = $399.98. Both attachment variants and the belt were available in checked US product data on October 19, 2026. A belt is not included with the attachment.
Existing compatible bare PR-4000, 80 in, without lat/row: the current 4000 / 80 in / RBS selectorized lat/low-row variant was $1,449.99, including the rear stabilizer. Add $399.98 = $1,849.97 before optional depth platforms, shipping and tax. Starting from scratch adds the complete rack/safeties/anchoring quote as well. Do not add a separate stabilizer again to the RBS bundle. Other cable variants require their own quote and inclusions check.
Depth and starting position can determine whether the purchase works. REP uses the same cable length for 80 and 93 in rack configurations. Belt length and chain setting affect depth; REP suggests a pair of Small 3-in-1 Wood Plyo Boxes when more elevation is needed, particularly on an 80 in rack. At $59.99 each, two add $119.98; verify the approved arrangement and your actual stance/range before loading. These are not guaranteed extra inches of squat depth for every user.
The $19.99 Cable Catch can support a top start on plate-loaded cable systems. On a selectorized system, REP says the stack must be lowered before moving the selector pin. Do not change a pin with suspended plates. Outside-rack installation also needs REP’s recommended front-foot extensions and an approved stability plan.
The attachment itself is listed at 25.3 L × 41.3 W × 8.1 H in and 41 lb; that is not the complete rack footprint or usable body clearance. REP’s page currently lists a 600 lb attachment maximum while its FAQ discusses 300 lb cable tension. Those are not interchangeable system ratings: confirm the installed cable system’s allowable load rather than buying to the larger headline.
Primary sources, checked October 19, 2026: REP Belt Squat FAQ and specifications, belt, lat/row configurations, Ares 2.0 compatibility FAQ. For a standalone machine, compare its full delivered cost and footprint with this complete rack-based setup.
Related guide: Compare Ares and Athena cable functions.
Compare complete configurations, not starting prices
Price the same height and working depth, the same safety type, J-cups, pull-up solution, storage and cable functions. A rack-only price and a rack-plus-Ares quote answer different questions. Include tax, shipping, anchoring and flooring in the budget; omit accessories you will not use.
Two-quote cost worksheet
Enter all six current quote amounts, including tax, delivery and installation. Use 0 explicitly only when an item is included or already owned, and record that reason with your quote. Blank, negative or invalid amounts leave the quote incomplete. Amounts allow up to two decimal places and $100,000 per line.
PR-4000 configuration
PR-5000 configuration
Choose by training goal
Squat and flat-bench focus: prioritize bar placement, safeties and a stable installation; PR-4000 is a sensible first quote. Bodybuilding with adjustable cables: compare the rack plus the supported Athena or Ares 2.0 configuration, cable travel and bench access. Mixed functional fitness: reserve open floor and overhead movement room rather than filling the garage with every attachment.
Already own a sound rack? Replacement is hard to justify unless its adjustment, safety system or compatibility blocks training you actually do. Use the hole-size guide and the rack-depth guide for the broader decision, then compare rack and cable priorities.
Primary sources: PR-4000 builder; PR-5000 builder.
Research and purchase checks
We compared current US manufacturer specifications and product builders. Dimensions are manufacturer figures and may include stated manufacturing tolerances. Check the current drawing, manual, configured price, delivery charges and return terms before ordering. Prices and configurations can change.
Still comparing rack formats or brands? Use our home-gym power rack shortlist and complete-cost comparison before committing to the REP ecosystem.
Manufacturer specifications and instructions
Check the exact model, configuration and current instructions before ordering; dimensions and required parts can differ by version.