Hydra Four Post with attachments
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  11. Hydra 3 x 3 inch Four Post Power Rack

Hydra 3 x 3 inch Four Post Power Rack

Feast your eyes on the fabled 3″ x 3″ 4-post rack with 5/8″ holes.

So sturdy. So customizable. So very much worth the financial sacrifice for a never-have-to-upgrade power rack. You know what they say though… buy once, cry once.

Garage Gym Reviews’ Best Squat Rack with Pull-Up Bar in 2023!

Scroll down as I take you through the magical journey of building your perfect power rack!

FEATURES • True 3″ x 3″ uprights • 5/8″ holes • 11-gauge steel  • 1,000lb capacity • Powder coat • Hardware included • Ships unassembled




The 4 Post Power Rack — it doesn't get more iconic than this.

This power rack is to home gyms, what maple syrup is to Canada: world-renowned, and the sign of impeccable taste. *chef’s kiss*

Benefits of the Hydra 3" x 3" Four Post Power Rack

    This 4 post power rack is the granddaddy of all rack configurations. If you want your rack to outlast heavy squats, handle big bench presses and withstand a set of chin-ups with 8 kids latching onto your waist, then this is the rack to get. This bad boy weighs a hefty +250lbs but lacks the upgraded stability of the 4 Post Flat Foot, so we’d recommend bolting it down before you go trying for a new chin-up PR. Oh, and did we mention you’ll fit in with the cool crowd with this rack? *nudge nudge*
    If you’re a die-hard fan of the metric system, then listen up: the uprights of our Hydra racks 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 who make their racks on US soil *respectfully tips hat*, you can mix and match attachments freely without needing to stick to one brand — hello, open ecosystem! Just be sure to research thoroughly BEFORE you begin the mingling shenanigans, deal?
    QUICK! Name three things in life you can’t live without. I’ll go first — pockets, sliced bread, and… a customizable power rack 😎 Choose a pre-made design like you see here or build your own piece-by-piece. You can always add separate components later when you’re ready to expand your unit with weight plate storage, or divide and conquer by splitting your rack into two collegiate-style racks for double the fun. As you can see, we put a lot of thought into this… our mom would be SO proud.


BrandBells of Steel
Total Length (Depth)35", 41" or 54"
Total Width47" or 49"
Total Height72", 84", 90" or 108"
Upright SpecsTrue 3" x 3"
Hole Size5/8"
Hole Spacing1" & 2"
Steel Thickness11-Gauge/2.9mm
CoatingPowder Coat
Weight Capacity1,000lbs
WarrantyLimited Lifetime

IMPORTANT: Our Hydra series of power racks are true 3″ x 3″ tubing with 5/8″ holes, so only attachments made precisely for 76.2mm x 76.2mm uprights will fit.

More AWESOME features on the Hydra 3" x 3" Four Post Power Rack

Hefty 11-Gauge Steel

Hefty 11-Gauge Steel

Built with 11-gauge steel, this bad boy can handle the weight capacity needs of world-class lifters. You get even more stability than our Light Commercial Rack which means less shaking when racking your bar or while using attachments. Even if it’s not bolted down, you’ll feel that true #heavyweight status.

Laser Cut Numbers

Laser Cut Numbers

Trying to line up your j-cups perfectly can be a pain in the you-know-what. And unlike many of our competitors, we have lasered numbers every 1-2 holes to make adjustments a breeze. So you can easily change your j-cup height after your widow-maker squat set… because counting is HARD WORK when you can barely breathe.

1" Spacing in Bench Zone

1" Spacing in Bench Zone

Ready to settle for 2″ hole spacing throughout? Pffft, not a chance. You are an efficient and optimized MACHINE, that’s why we went with extra precise 1″ hole spacing to make unracking a heavy bar a little easier. After all, every morsel of energy matters when going for that 1lb PR (fractional plates, you da real MVP).

Hydra black Safety Straps

No Spotter Needed

If you train alone, then you know what it’s all about: your own music, no line-ups, and curls in the squat rack. However, it’s essential that you train safely and that’s why every Hydra rack comes with your choice of pin pipe safeties, safety straps, or spotter arms. You should NEVER hesitate to dump a loaded barbell if needed.

Frequently Asked Questions

Customer Reviews
4.7 Based on 7 Reviews
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Finally, something for my goblin cave

A solid rack that fits my basement. I have ~81" of space to work with vertically, and short of just getting a squat stand that went to 72" I had very few options until this was released. It is doing its job admirably, and I barely fit in the uprights vertically to be able to do squats. A word of advice- if you are 6"0' or taller be very careful about pull-up bar selection on 72" uprights. If you attempt to get greedy you will find you have no room to use your power rack for squats.


Bells of Steel

Hi there, Thank you so much for the 5 star review of our Hydra 3x3 four post rack. We are so glad our shorter rack options have come in handy for you and your space, and we look forward to serving you again in the future. Sincerely, Marcus & the BoS team

Kyle S.

Hydra Rack - 108"

Great "CAGE"...not many options for >100"...able to add heavy bag due to increased height capability...also added two plate-loaded towers...squat rack on one-side and functional trainer on the opposite...complete walk through system. Stay safe.

  • My Fitness Goal Is: lift several times of week...guiding my 14 year son proper methods
Bells of Steel Hydra 3 x 3 inch Four Post Power Rack ReviewBells of Steel Hydra 3 x 3 inch Four Post Power Rack Review

Bells of Steel

Hi Kyle, Thank you so much for your 5 star review of our hydra 3x3 rack. We love to hear about the great customization you were able to do , by adding two of our plate loaded cable towers as well. It truly is a complete walk through system! Enjoy and all the best ! Yours in strength, Marcus & the BoS team