Roc Foldable 4 Post Cage Builder (3" x 3", ⅝" Holes)

Slim folding power rack for lifters with serious space constraints.

Financing Available
Fast Shipping
30 Day Returns
Canadian-Based Support

Specifications

Shipping & Returns

We get it — shipping heavy gym gear raises some important questions. Here’s exactly what to expect:

Shipping Time:  Ships within 1–5 business days. Once shipped, you should expect the order to take up to 7 business days to arrive at your doorstep.

Returns: All Bells of Steel products are backed by our return policy If you don’t love your order, return it within 30 days—simple and stress-free.

Bells of Steel Training App

Your equipment purchase unlocks 30 days free on the Bells of Steel Training App.

Pick your equipment setup in-app and get a coach-built strength program that matches — ZERO substitutions. Built from the ground up for what you own.

App Features:

•  30+ full programs + 20+ single-day workouts

•  1,000+ exercise demo videos with coaching cues

•  Progress tracking: volume, intensity, PRs

•  Works with Apple Health, Health Connect, Garmin, Fitbit

•  Couples Plan available

•  30 day money-back guarantee

Explore the Bells of Steel Training App

Want a coach instead? Online Coaching is available with a certified in house Bells of Steel coach.

Product Features

  • SUPER SPACE-SAVER

    If you actually park your car in your garage and aren’t allowed to fill it up with fitness equipment, this folding power rack lets you have your cake and eat it too. The smallest size is only 41.5 inches deep.

  • SMALL SIZE, FULL POWER

    Despite its compact footprint, it flexes all the beloved rack features. Laser-cut numbers to easily line up rack attachments. Beastly 1,000-pound capacity and robust 11-gauge tubing. Everything you need to tame (or unleash) the mythical beast within.

  • THE DIY-ER'S DREAM

    MacGyver, Jack of All Trades, Renaissance (Wo)man. As a DIY expert, you go by many names but you're never afraid to dig out your bandsaw to rig up your own solution. This folding power rack includes all hardware needed to stylishly install it.

Product Details


Gym so small it could be featured on an episode of Itty-Bitty Home Gyms? Congrats! This is the folding rack for you.
Its 1,000-pound capacity outlasts heavy squats, handles big bench presses and withstands chin-ups with 8 kids hanging onto your waist — just bolt it securely before you go trying for that new chin-up PR.
The uprights measure true 3″ x 3″ which is EXACTLY 76.2mm x 76.2mm, instead of the typical 75mm x 75mm uprights of other brands’ imported racks. By matching the same tubing specs as many of our American competitors, you can mix and match attachments freely without needing to stick to one brand — hello, open ecosystem!
Built with modular components, so you can expand later into a larger Hydra rack to accommodate a new home gym space or team workouts with your swolemate.
Compatible with Hydra rack attachments. The Folding Power Rack includes: four uprights, four crossmembers, four folding wall connectors, one pull-up bar, four 8" wall mount hinges, two j-cups, two safeties, one logo tag, and all required hardware.
IMPORTANT:
 The Hydra series of power racks are TRUE 3″ x 3″ tubing with 5/8″ holes, so only Hydra attachments & non-B.o.S. attachments made precisely for 76.2mm x 76.2mm uprights with ⅝” holes will fit.

PRODUCT SPECS


Manuals and Assembly



The Bells of Steel Roc Foldable 4 Post Cage Builder features a black metal design with four vertical posts and a horizontal pull-up bar. It supports up to 1,000 pounds, offers multiple height adjustments with ⅝" holes, and includes red safety spotter arms suitable for weightlifting and strength training.
Bells of Steel

Roc Foldable 4 Post Cage Builder (3" x 3", ⅝" Holes)

Gym so small it could be featured on an episode of Itty-Bitty Home Gyms? Congrats! This is the folding rack for you.
Its 1,000-pound capacity outlasts heavy squats, handles big bench presses and withstands chin-ups with 8 kids hanging onto your waist — just bolt it securely before you go trying for that new chin-up PR.
The uprights measure true 3″ x 3″ which is EXACTLY 76.2mm x 76.2mm, instead of the typical 75mm x 75mm uprights of other brands’ imported racks. By matching the same tubing specs as many of our American competitors, you can mix and match attachments freely without needing to stick to one brand — hello, open ecosystem!
Built with modular components, so you can expand later into a larger Hydra rack to accommodate a new home gym space or team workouts with your swolemate.
Compatible with Hydra rack attachments. The Folding Power Rack includes: four uprights, four crossmembers, four folding wall connectors, one pull-up bar, four 8" wall mount hinges, two j-cups, two safeties, one logo tag, and all required hardware.
IMPORTANT:
 The Hydra series of power racks are TRUE 3″ x 3″ tubing with 5/8″ holes, so only Hydra attachments & non-B.o.S. attachments made precisely for 76.2mm x 76.2mm uprights with ⅝” holes will fit.
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