Mammoth Bar

Name: Mammoth Bar
Brand: American Barbell
Rating: 4.22 (3 reviews)

The American Barbell Cerakote Mammoth Power Bar (OB20-IPFM-ES) is a 20kg, 29mm competition-style power bar built around a super-stiff, 210,000 PSI stainless steel shaft finished in Elite Smoke Cerakote for corrosion and abrasion resistance American Barbell rates at up to 70x that of chrome. It pairs a medium, IPF-marked center knurl – milder than most power bars, which owners consistently praise for letting them squat and bench without shredding their backs or hands – with two-piece sleeves on a bushing rotation system, finished in hard chrome for a quiet, smooth spin. Reviewers across Garage Gym Lab, Garage Gym Reviews, and r/homegym rate its build quality and tolerances a step above comparable stainless Rogue bars, making it a favorite for high-volume pressing, squatting, and pulling. It carries American Barbell’s limited lifetime warranty, is made in the USA, and American Barbell has confirmed the bar is now discontinued and depleted, with no current restock planned.

Buying guide

Best Barbell for Your Home Gym — July 2026

Knurl	Medium, IPF-marked center knurl
Made in	USA
Warranty	Limited lifetime
Bar weight	20kg
Application	Powerlifting, strongman, heavy strength training
Availability	Discontinued (depleted, no longer available per manufacturer)
Manufacturer	American Barbell
Product code	OB20-IPFM-ES
Shaft finish	Stainless steel with Elite Smoke Cerakote
Sleeve finish	Precision-machined steel with hard chrome finish
Overall length	86.5"
Shaft diameter	29mm
Rotation system	Bushing
Tensile strength	210,000 PSI
Loadable sleeve length	16.25"

What is a Barbell?

What a barbell is

The barbell is the center of a strength gym — the bar you squat, press, deadlift, and clean with. A men’s Olympic bar is 20 kg (44 lb) and 7.2 ft long (15 kg / 6.5 ft for women). The specs that matter: knurl (the grip texture — aggressive for pulls, milder for high-rep work), shaft diameter (28–29 mm for barbell lifts), sleeve rotation (bushings are fine for slow lifts; bearings spin fast for the Olympic lifts), tensile strength (~190k+ PSI resists bending), and coating (bare steel grips best but rusts; stainless and Cerakote trade grip for corrosion resistance).

Which one to buy

For general lifting, a multipurpose bar (28–28.5mm shaft, dual knurl marks, no center knurl) does squats, bench, deadlifts, and the occasional clean off one bar — this is the right first barbell for most home gyms. Choose a dedicated power bar (29mm, stiffer, aggressive center-knurl grip) only once you know you’re training squat/bench/deadlift specifically and want the stiffest, grippiest tool for that job. A dedicated Olympic weightlifting bar (needle bearings, more whip) is worth it only if you clean, snatch, or jerk regularly.

Beyond your main bar, specialty bars solve specific problems rather than replacing it: a safety squat bar shifts load off sore shoulders, a trap/hex bar takes stress off a cranky lower back on pulls, and a curl bar’s camber reduces wrist strain on isolation work. Add them once you know which problem you actually have.

How it compares

	Mammoth Bar	Angled Multi-Grip Barbell	Archon Multi Grip Bar	Iron Wolfe Vintage Bench Bar
GymRadar rating	4.22/5	4.22/5	4.22/5	4.22/5
Price		$204.97
Knurl	Medium, IPF-marked center knurl
Made in	USA
Warranty	Limited lifetime
Bar weight	20kg
Application	Powerlifting, strongman, heavy strength training
Availability	Discontinued (depleted, no longer available per manufacturer)			discontinued — no longer manufactured; surviving bars are largely held by IPA/RPS competitive federations in the northeastern US rather than sold at retail
Manufacturer	American Barbell		ARCHON Fitness
Product code	OB20-IPFM-ES
Shaft finish	Stainless steel with Elite Smoke Cerakote
Sleeve finish	Precision-machined steel with hard chrome finish
Overall length	86.5"	82.25 in
Shaft diameter	29mm			29mm
Rotation system	Bushing
Tensile strength	210,000 PSI
Loadable sleeve length	16.25"	14.5 in

4.2/5 · 3 GymRadar reviews

Reviews by source

Expert	4.22/5	3 reviews
Retailer	5.0/5	12 reviews
Reddit	4.5/5	12 reviews	r/homegym owners overwhelmingly favor the Mammoth over their stainless Rogue bars ('a cut above,' 'my favourite of the bunch'), repeatedly praise the passive knurl for shirtless squatting, and confirm via American Barbell CS that the bar is discontinued; a recurring minority complaint (2 threads) reports sleeve/bushing play developing within months of purchase.

The Mammoth Power Bar is the bar American Barbell built for people who want a real 29 mm power bar without an aggressive knurl, and it is the rare piece of equipment where the experts and the owners agree on why. Durability is the standout dimension: a stainless shaft under Cerakote is belt-and-braces rust protection, and a GymRadar owner four years into an unclimatized garage reports doing almost no maintenance and the bar still looking “phenomenal.” Garage Gym Lab scores it 9.3/10, Garage Gym Reviews 4.7/5, and multiple r/homegym owners who also own stainless Rogue bars call the tolerances “a cut above.” Value is the weakest dimension by a wide margin — it is the lowest category score at every scored source, and it now carries an extra problem: American Barbell has confirmed the Mammoth is depleted and discontinued, so the only way to get one is the used market. If you want the same passive-knurl, corrosion-proof idea from a bar you can still buy, an owner in the GymRadar thread names the AB Chewy Bar as its spiritual successor; if you want more bite for heavy pulls, the stainless Ohio Power Bar is the bar owners here keep alongside it for exactly that reason.

+Durability: a stainless shaft finished in Cerakote is close to a rust-proof system — AB's salt-spray claim is 70x chrome, and a GymRadar owner four years into an unclimatized garage reports near-zero maintenance and a bar still in phenomenal shape (American Barbell archived page, GymRadar)
+Build quality: tight tolerances, recessed sleeve welds that keep plates from binding, and quiet hard-chrome sleeves — Garage Gym Lab scores Sleeves 9.7/10 and Specs 9.8/10, and r/homegym owners who also run stainless Rogue bars repeatedly call it a cut above them (Garage Gym Lab, r/homegym)
+Functionality: a very stiff 210,000 PSI shaft with an IPF-marked center knurl and slow bushing rotation, which is exactly what you want under a max squat or bench — Garage Gym Reviews rates Performance 4.75/5 and notes the tensile strength beats the Texas Power Bar by 25,000 PSI (Garage Gym Reviews, Active.com)
+Functionality: the medium knurl grips well without shredding hands or backs, which is the single most repeated point in the file — several r/homegym owners specifically squat shirtless with it, and GymRadar owners report no grip issues at all (r/homegym, GymRadar)
+Versatility: passive knurl plus a lifetime warranty makes it a viable only-bar for high-volume pressing, squatting and pulling, and one GymRadar owner notes his wife and kids prefer it to their junior bar for the same reason (Garage Gym Lab, GymRadar)

−Value: the weakest dimension at every scored source — GymRadar rates Value 3.33/5, Garage Gym Reviews 4.25/5, Garage Gym Lab 8.7/10, and even owners who love the bar preface their reviews with 'I know it was overpriced' (GymRadar, Garage Gym Reviews, Garage Gym Lab)
−Value: it is discontinued — American Barbell customer service confirmed on r/homegym that the Mammoth is depleted and no longer available, so there is no current MSRP and no warranty-backed new purchase, only the used market (r/homegym, American Barbell product page 404)
−Functionality: the knurl lacks the bite competitive powerlifters want on heavy deadlifts and low-bar squats — Garage Gym Reviews and Active.com both flag it, and a four-year GymRadar owner says he would want something more aggressive if he were competing (Garage Gym Reviews, Active.com, GymRadar)
−Durability: two r/homegym owners posted videos of sleeve/bushing play developing within months of purchase and asked whether the sleeves had failed; no expert source reports this, so treat it as a minority report rather than a pattern (r/homegym)
−Versatility: bushing rotation is deliberately slow — Garage Gym Reviews calls the spin 'lethargic,' which is fine for the big three but rules the bar out for Olympic lifting, and AB advises storing it only on urethane-coated racks and bar-protective J-cups (Garage Gym Reviews, Active.com)