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OSO Barbell Collars

Sold in Pairs

Special Price $67.00 CAD

Regular Price: $67.00 CAD

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OSO Barbell Collars

OSO Barbell Collars are manufactured in Columbus, Ohio from the same type of 6061 Billet Aircraft Grade Aluminum alloy used in aircraft construction. The OSO Barbell Collars deliver on functionality, too--creating a secure hold on the bar through repeated, high-impact drops, and allowing easy adjustments or removal with a simple lever and lock/unlock mechanism.

All that being said, the first thing a lot of lifters talk about with the OSO Barbell Collars is how they look. Shaped like an industrial gear, the collars' old school design is paired with some bright color options: blue, green, orange, pink, purple, red, gold and gun metal.

For Oly lifters, CrossFitters, or any athlete looking for an upgrade from basic spring collars, OSO Barbell Collars are a nice option.


  • Sold in Pairs
  • Made in the USA
  • Designed to be used on 50MM Olympic Bar Sleeves
  • 6061 Billet Aircraft Grade Aluminum
  • Weight: 0.8LB per pair
  • Width: 1.5"
  • Orange Rubberized interior lining to protect bar
  • Locking clamp mechanism for secure hold
  • Color Options: Blue, Green, Orange, Pink, Purple, Red, Gold, and Gun Metal.

Also, check out the Specialty Collars

Rogue fitness will warranty this product from defects in material, functionality and workmanship for a period of 2 years from the date of purchase of the product. The warranty applies only to the original purchaser of the product for so long as the original purchaser owns the product, and is non-transferable. Warranty may be voided for any product which has been damaged due to negligent or faulty use, alteration, maintenance, storage or handling by the user. Any specific issues regarding a Rogue product with which a customer is not satisfied will be reviewed on a case-by-case basis.Note: Rogue will continue to honor warranties on products purchased directly from OSO prior to Rogue's acquisition of OSO Barbell Collars on these same terms and conditions.

Gear Specs

Brand OSO
Made In USA Yes
Product Weight 0.8LB per pair
Width 1.5"
Material Type 6061 Billet Aircraft Grade Aluminum
OSO Barbell Collars is rated 4.8 out of 5 by 101.
Rated 4 out of 5 by from Just on flaw. These collars are great. They are well made, easy to use, great looking, and very secure. The one thing I will warn you about is the fact that they can chew up your bumpers if you have the kind with rubber all the way to the center (like the Rogue echo bumpers) and you're dropping the bar on the ground. It's for that reason that I also got a pair of the OSO Mighty collars. They're about half the price, seem just as secure, and have a design that won't mess up bumper plates. I wish I had just gotten those in the first place. If you have metal plates or bumpers with w big metal disc in the center, then what I'm talking about doesn't apply to you.
Date published: 2015-11-10
Rated 5 out of 5 by from The New Standard Incredible holding power. I have used these for several workouts with thrusters and C&J including a repeat of 13.4 this past week. Dropping the bar from overhead to the ground 50+ times in a workout and they didn't budge. I have had both the regular Rogue collars and the metal rogue collars and they all have moved enough to have to tighten them mid-workout. Not OSO clamps. I can't comment too much on durability yet as they are only 2 weeks old but they are holding up very well so far. The 2 year warranty helps me have some assurance that if they were to break the company will stand behind them. On a final note, be smart when you open them as the clamp is easy to manpulate but "snaps" open and if you catch a finger it can smart! Pictured they are on my axle bar and hold on this very well too.
Date published: 2015-02-21
Rated 5 out of 5 by from I don't know how to workout now I feel like I'm a great person to review these collars as I'm not very fit and have to drop the barbell 3 times as much as any other athlete during a workout. If anyone knows about dropping weights, I'm the guy. Rich Froning's review? Although highly respected, worthless. What does he know? He only drops a barbell once in a workout. Anyway, these collars keep my plates secured tightly to the barbell even in the most dynamic situations, like bouncing across the gym floor causing everyone within a 10 foot radius to dodge it between their reps. The only problem is now I'm not able to catch my breath while re-securing my weights and adjusting my collars. That was my "go-to". Now I'll have to do something else to buy me time, like fake tie my shoe or walk outside to make sure I didn't lock my keys in my car. I love these collars but they have totally messed up my approach to workouts.
Date published: 2018-11-24
Rated 4 out of 5 by from Worth the investment I bought these because my new box has Spring Collars, which I find nearly impossible to quickly change plates mid-workout. Or remove plates after a grippy metcon. The lock/unlock mechanism is a bit stiff in the beginning, but after a few weeks of use it's settled well. When locked, the grip is VERY tight. If the sleeve of your barbell has any imperfections you can catch tough friction when adding/removing the collar. That can slow you down. Super happy with these. I bought the pair in red and the color is bold- it's easy to spot from across the room and it prevents the collars from ending up with the rest of the community gear. Solid, high quality.
Date published: 2018-11-02
Rated 4 out of 5 by from OSO Manufacture Deformity Great product from Rogue overall. Collars don't get loose while dropping heavy sets. With first use OSO collars are snug then become easy to slide. Great product to avoid scratching your barbell. Now for what your paying for I'm surprised how it arrived one collar has a manufacture deformity as seen on picture yet serves its purpose. Not what I expected from Rogue for the price tag on the OSO collars. Overall love these collars and Rogue you might need to reevaluate your product before its sent out to avoid manufacture deformity to leave the warehouse if so there is a Boneyard section to serve its purpose. If it weren't for the deformity I'd rate it a 5 Star product.
Date published: 2020-03-06
Rated 5 out of 5 by from The gold standard I can't say enough good things about these clamps. 50+ reps dropped from overhead with 135 pounds on the bar, and they do not move. The only VERY minor gripe that I have is the color is coming off at a few of the corners on my orange ones, but I think that's my own fault due to how I'm storing them in a large bin with other things, rather than in a box by themselves. It's probably just because other stuff is hitting/rubbing them. Amazing collars, well worth every penny. They put springs & HG collars to shame.
Date published: 2015-03-25
Rated 5 out of 5 by from Exceeds expectations I've used these for three workouts now. One was to establish max weights in deadlift, front squat, and power cleans. Another involved 100+ reps of ground-to-overhead movements at moderate weight. These collars didn't budge even a millimeter. the color (orange) looks awesome, the function is beyond expectation, and best of all- made in the USA. I think I'll be gifting these collars to athlete friends of mine for the foreseeable future. Without reservation, 5 stars.
Date published: 2015-03-17
Rated 5 out of 5 by from Save yourself the trouble... BUY THESE NOW. We met these folks during the 2015 Regional's in Dallas. I have heard MANY good things about these collars in the past, but made the jump to get them after seeing them in person. GREAT product that does EXACTLY what it was made to do. I will agree with the post that recognized that you need to use some caution when unlocking them. If you're not mindful, the clamping mechanism can slap you in the knuckles for a bit of a wake up!
Date published: 2015-05-19
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