Oso Barbell Collars 2.0

Name: Oso Barbell Collars 2.0
Brand: Rogue Fitness
Rating: 4.63 (9 reviews)

The OSO Barbell Collars 2.0 are machined from 6061 billet aircraft-grade aluminum with an updated lever mechanism over the original OSO design. Each collar clamps onto a standard 50mm Olympic bar sleeve and locks down with a simple three-position lever (locked/unlocked/open), backed by a rubberized interior lining that grips the bar and protects it from scuffing — a step up from the plate-scraping spring collars many bars ship with. At 0.8 lbs per pair, they’re built for Olympic lifting, powerlifting, HIIT, and CrossFit use.

Independent YouTube reviewers have drop-tested the collars repeatedly across snatches, cleans, and deadlifts and report the clamp holding rock solid without loosening or damaging bumper plates. Buying guides from Garage Gym Lab and Garage Gym Reviews both rank the OSO 2.0 as a strong, well-built option — though both note that Rogue’s own USA Aluminum Collars are very similar in price and materials while sliding on more easily and edging out the OSO for outright top pick. The recognizable gear-shaped design, available in multiple colors, is otherwise the OSO’s calling card.

Color	Gun Metal (5 color variations available)
Width	1.5"
Weight	0.8 lbs per pair
Made in	USA (Columbus, Ohio)
Sold as	pair
Interior	rubberized lining to protect the bar
Material	6061 billet aircraft-grade aluminum
Warranty	2-year coverage for material and workmanship defects
Mechanism	lever lock/unlock clamp
Compatibility	50mm Olympic bar sleeves

What is a Collar?

What barbell collars are

Collars (clips) lock the plates onto a barbell’s sleeves so they can’t slide or rattle off — a safety essential, especially for pressing and Olympic lifts. The common types: cheap spring clips, quick lock-jaw / quick-release collars (the everyday favorite — fast and secure), and competition collars (precision-weighted, 2.5 kg each, for calibrated meets).

What to look for

A secure clamp that won’t creep under drops or high reps, quick on-and-off operation, and a fit for your bar’s sleeve diameter (standard Olympic is 50 mm). For most home gyms, a pair of lock-jaw-style collars is the right balance of speed, grip, and price.

How it compares

	Oso Barbell Collars 2.0	Strongman Collars Gorilla Strength	OSO Mighty Axle Collars 2.0	Olympic Pressure-Ring Training Collars COT-2.5
GymRadar rating	4.63/5	4.67/5	4.67/5	4.67/5
Price	$55.00	$40.00	$40.00	$76.50
Color	Gun Metal (5 color variations available)		Red anodized
Width	1.5"		1.4"
Weight	0.8 lbs per pair		0.32 lb per collar
Made in	USA (Columbus, Ohio)		USA (Columbus, Ohio)
Sold as	pair		Pair
Interior	rubberized lining to protect the bar
Material	6061 billet aircraft-grade aluminum		6061 billet aircraft-grade aluminum
Warranty	2-year coverage for material and workmanship defects
Mechanism	lever lock/unlock clamp
Compatibility	50mm Olympic bar sleeves

4.6/5 · 9 GymRadar reviews

Reviews by source

Expert	4.63/5	9 reviews
Retailer	3.8/5	6 reviews
Youtube	4.5/5	2 reviews

The OSO Barbell Collars 2.0 back up their aircraft-grade-aluminum looks with genuine drop-test durability — independent YouTube reviewers have hammered them through repeated snatches, cleans, and deadlifts without the clamp budging or damaging bumper plates. The standout dimension is durability; the weakest is functionality, where two separate buying guides note the lever can pinch fingers on release and the collar takes more effort to slide on than rival lever collars. Signal is split on value: GymRadar’s aggregated expert rating (4.63/5, 9 reviews) is strong, but the manufacturer’s own on-site rating sits lower (3.8/5, 6 reviews) — worth flagging rather than smoothing over.

+Durability: repeated drop-testing across snatches, cleans, and deadlifts left the clamp unmoved and undamaged (YouTube: Grinders Gear Review)
+Build quality: 6061 billet aircraft-grade aluminum construction feels dense and premium, with a rubberized interior that grips the bar (YouTube: Equipment Review — OSO Barbell Collars)
+Functionality: three-position lever (locked/unlocked/open) makes removal easy once learned, and testers found no bumper-plate scuffing despite rumors to the contrary (YouTube: Equipment Review — OSO Barbell Collars)
+Value: praised for excellent grip strength for the price in third-party testing (Garage Gym Lab)
+Versatility: fits any standard 50mm Olympic bar sleeve and comes in multiple color options (manufacturer)

−Functionality: the lever can pinch fingers on release and is easiest to operate with two hands (Garage Gym Lab)
−Functionality: slightly harder to slide on initially than competing lever collars (Garage Gym Lab)
−Value: Garage Gym Reviews' buying guide calls it very similar to the same-priced Rogue USA Aluminum Collars but ranks that alternative ahead of it
−Value: the manufacturer's own on-site rating (3.8/5, 6 reviews) trails GymRadar's aggregated expert rating (4.63/5, 9 reviews)

$55.00

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