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OSO Mighty Collars

OSO Mighty Collars

€32.00 €38.72 Incl. Tax

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OSO Mighty Collars

Designed and manufactured in Colorado 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—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
  • Color: Gun Metal
  • Weight: 0.3 lb.
  • 2 Year Warranty*

See Also: The exclusive Rogue OSO Barbell Collar

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 Gun Metal
Product Weight 0.3 lb.
Width 1.4"
OSO Mighty Collars is rated 4.4 out of 5 by 51.
Rated 5 out of 5 by from Great product Only thing to be cautious about is people complain about it being too tight. It’s like that for a reason... Just make sure clips totally up before sliding onto the bar and you will have no issues
Date published: 2019-08-30
Rated 3 out of 5 by from Do the job but hard to take on/off These are good collars, nice feeling good quality metal and pinch mechanism. However the lever to tighten and loosen is very cumbersome and annoying. It's a skinny little lever that requires a decent amount of force to sinche or undo, and basically requires two hands. Not a great design, they should make it fatter and wider so you can get a good grip on it.
Date published: 2019-08-20
Rated 5 out of 5 by from Fits my old school bar bell They hold great on my bar that is 40+ years old!!!
Date published: 2019-08-04
Rated 4 out of 5 by from Great for the price! This is my first pair of collars, so I can’t compare to others. The most I put on a bar is 415 lbs and the collars work great in this range. I thought these would save me time adjusting the weight on the bar but so far it takes me just as long to take them on and off as the spring collars. My biggest complaint is the color!!! I could get blue or grey, I chose grey but the collars that I got have a hint of purple!
Date published: 2019-08-03
Rated 3 out of 5 by from Just ok, little disappointed. Look they are tight, really freaking tight. I spent about 20 mins wearing one of them down so the clip would move. I thought it was going to break. I was ready to throw them away. After reading and looking online I am not the only one. It literally creates a groove in the clip. I have not even used them yet. If you do not get the clip pulled all the way back then the collar will not go on the bar. The other thing is that it clips on by clamping the clip over the bar and makes an impression on the bar itself. Spend the extra money on a only style collar if you don't want the hassle or wear on the bar.
Date published: 2019-08-01
Rated 5 out of 5 by from Perfect! Really good collars, very thin so don't take up to much space on the bar and don't move when you drop the barbell, whould def recommend them.
Date published: 2019-07-31
Rated 5 out of 5 by from Durable and Compact I searched different review sites for the best collars for the money. These seemed to be the best. They are lightweight and compact enough to fit in my workout shorts pockets while I am in the gym. I don't have to carry around a bag or store them in the floor lockers. The only downside is that they don't slide on the barbell as easily as I would like. It takes just the right angle to slide them down the bar. At first I thought I had bought the wrong size, but it's just the nature of the design. I think that the longer I have them, the rubber on the inside will start to get less sticky and it will be easier. All in all, I don't regret buying them one bit. Being able to walk around the gym with them in my pockets is the biggest plus!
Date published: 2019-07-05
Rated 4 out of 5 by from Sufficient I bought a pair of these for my home gym. I have been using them for about a month. They hold well but they do seem to allow a little wobble from the plates. I would venture this is due to their small diameter. They don’t cover much more than the collar of the plates.
Date published: 2019-06-07
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