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OSO Mighty Collars

Sold in Pairs

Special Price $37.00 CAD

Regular Price: $37.00 CAD

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OSO Mighty Collars
Multi Color

Collars are manufactured in Columbus, Ohio using aircraft-grade aluminum, OSO Mighty Collars offer many of the same benefits of the standard OSO Barbell Collar in an economically priced model.

These super lightweight collars—available here in Gun metal and Blue—are sold in pairs and equipped with a rubberized interior lining to protect the bar. OSO Mighty 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.


  • Made in the USA
  • Designed to be used on 50MM Olympic Bar Sleeves
  • 6061 Billet Aircraft Grade Aluminum
  • Black Rubberized interior lining to protect bar
  • Locking clamp mechanism for secure hold
  • Weight: 0.3LB
  • 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.

See Also: The exclusive Rogue OSO Barbell Collar

Also, check out the Specialty Collars

Gear Specs

Brand OSO
Made In USA Yes
Product Weight 0.3LB
Width 1.4"
OSO Mighty Collars is rated 4.3 out of 5 by 82.
Rated 5 out of 5 by from locking collars I bought these collars a month ago and have had zero issues
Date published: 2020-10-07
Rated 1 out of 5 by from Collars not strong enough The collars can't hold the plates in place when I use them for dumbbells
Date published: 2020-09-28
Rated 5 out of 5 by from Used them in a powerlifting meet this weekend. Awesome, used in competition without issues. Strong enough to hold 600 plus on a bar.
Date published: 2020-09-21
Rated 4 out of 5 by from Good Value fpr cost Collars tend to break a lot at the box, so this is a good low-cost collar when they are taking daily abuse and need to get replaced occasionally.
Date published: 2020-08-31
Rated 2 out of 5 by from Don’t last....... After two uses one of the collars doesn’t stay tight. I’m having to constantly tighten up one side of the bar during a WOD. Very annoying.
Date published: 2020-08-30
Rated 5 out of 5 by from Great Very sturdy and heavy duty. Light weight and quick to detach and apply to the barbell.
Date published: 2020-08-28
Rated 5 out of 5 by from Get the job done perfectly As a few reviewers have noted, they feel a little light out of the box but so far I have had no issues with them. They stay on securely, even when finishing heavy deadlifts lazily (ok, very lazily). Many have noted the lever functions somewhat oddly (the lever doesn't sit flush when closed). My guess is this is to allow the collar to function even if the lock mechnism is worn out, the lever can simply be closed further until tight to bar.
Date published: 2020-08-24
Rated 3 out of 5 by from Firmly hold the plates, but the lever disappoints We bought them and used them once. On our bars, the only way we could get them on was to open the lever until it clicked and that took some figuring out. Once installed, they held our bumper plates in place very well. Removing them was difficult: it takes more force than I'd prefer to open the lever and there's not a lot of purchase on the collar itself to get leverage: if you have sweaty hands, forget it. Also, when the lever finally pops up, it flips fast and can snap into your hand with a little sting They work by pushing a nub in the lever that protrudes to the inside of the collar into the bar, and I imagine this could wear over time, which could make it easier for a while, but would eventually wear out. They seemed like they held better than spring collars, and are definitely more aesthetically pleasing, but the negatives outweighed the positives for us. We returned them and picked a different design.
Date published: 2020-08-14
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