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Rogue OSO Barbell Collars


Rogue OSO Barbell Collars

This is the exclusive, Rogue-branded version of the OSO Barbell Collar—an innovative, aircraft-grade aluminum clamp designed are manufactured in Columbus, Ohio.

Sold in pairs and equipped with a rubberized interior lining to protect the bar, OSO Collars deliver a secure, stable hold through repeated, high-impact drops, and allow easy adjustments or removal with a simple lever and lock/unlock mechanism. It’s the OSOs unique look, though, that generates the most attention. With this design, that means an industrial gear-style shape in gunmetal gray with the Rogue logo down the side.


  • Sold in Pairs
  • Made in the USA
  • Designed to be used on 50MM Olympic Bar Sleeves
  • 6061 Billet Aircraft Grade Aluminum
  • Width: 1.5"
  • Black Rubberized interior lining to protect bar
  • Locking clamp mechanism for secure hold
  • Color: Gunmetal Gray w/ Rogue branding
  • 2 Year Warranty*

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
Color Gray
Width 1.5"
Material Type 6061 Billet Aircraft Grade Aluminum
Rogue OSO Barbell Collars is rated 4.7 out of 5 by 48.
Rated 5 out of 5 by from Work Great I bought these over a year ago and have used several times a week - they've held up great. They weight .6 lbs so they pair perfectly with the typical 20kg bar to give you a true 45lbs - for the OCD of us. :) For those who gave lower reviews than 5 stars because the locking arm can snap/hurt your fingers when you open them... I'm not sure what to say - treat it like an IQ test?? ... see if you can flip it open with one finger while keeping your hand out of the way - we do now have opposable thumbs to separate us from the primates. :)
Date published: 2017-03-27
Rated 4 out of 5 by from OSO vs. HG Collars These collars have much better grip than the HG collars, but they are still not perfect. I bought the OSOs because my HG collars slide around a lot during high rep workouts where the bar is dropped frequently. The OSOs have solved this problem - they hold strong even after >20 drops from overhead with only 25# bumper plates on the bar. They fall short of perfection in two ways: 1) they have started to eat into my bumper plates after minimal use (see picture) and 2) they are difficult to slide onto the barbell and this slows down weight changes. Overall this is a good product, but not necessarily better than the old HG collars - each collar has its own strengths and weaknesses. Buy the OSOs for high volume WODs (especially if you have bulletproof competition/training plates) and the HGs for low rep weightlifting and strength training where frequent weight changes are required.
Date published: 2015-09-13
Rated 3 out of 5 by from Great quality, almost too a fault, however. Your weights won't budge with these, however, the locking clasp mechanism is a little over the top. For closing, it's easy and secure. For release, it's so tightly locked that when you open the clasp it pops back and hits your thumb/finger. It's not an easy flow on and off the bar, and for that I caution anyone getting these. I've had this thing hit my finger so many times when opening the clasp that I'm cautiously opening each time, which is an odd thing to do during a workout. Again great quality, almost too much.
Date published: 2020-02-15
Rated 5 out of 5 by from Best collar I currently have a set of the HG Collars and spring collars. The spring and HG collars always shift when deadlifting. The OSOs do not - they were totally locked in over 12 sets of 400-500lbs being dropped. Best collars I've ever used. They do dig into the plates a bit and cause a wear pattern - but we're talking about barbell lifting, not a beauty pageant. Wear and tear is fine - I don't see that as a downside. Others might.
Date published: 2015-10-11
Rated 5 out of 5 by from Best collars I've ever used These things don't move once you lock them down, and they look good too. Some people say they are hard to get on and off, but I question if they are opening the collars up completely. If you rotated the handle back all the way it locks the collar open, and it is very easy and quick to get them on and off.
Date published: 2016-03-09
Rated 5 out of 5 by from Usage: Opening/Closing I had these for a while now, over 4 months. Initially, when using I was not opening the clamp all the way and struggled to get them on/off. So, I stopped using them and by chance one day I opened them all the way not being afraid of breaking them and it allowed the extra room to easily slide on/off the bar. Do not make the same mistake and write negative reviews for human error. Use both hands when operating or you will experience some pain from the clamp snapping back.
Date published: 2018-04-05
Rated 5 out of 5 by from Wow! I just received these collars and they are bomb proof. They are a little tighter and stiffer the the original ones. When Rogue puts their name on something that stuff is gold!
Date published: 2015-06-05
Rated 5 out of 5 by from Ricky Bobby approves We used these yesterday during a training session that culminated into 40 power cleans in 10 minutes at 225#. The collars or plates did not budge on my Rogue Training Bar.
Date published: 2015-08-27
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