Overview
OSO Mighty Collars 2.0 are a compact, super-lightweight version of the signature OSO aluminum collar line. Precision-manufactured in Columbus, Ohio, these collars utilize a "slimmed down" 6061 billet aircraft-grade aluminum design to offer high-end holding power at an economical price. Despite their small profile, they provide a rock-solid, stable hold during high-impact drops, making them a favorite for both barbell and loadable dumbbell work.
Product Page: OSO Mighty Collars 2.0
Key Features & Specifications
Made in the USA: Manufactured and assembled at Rogue HQ in Columbus, OH.
Material: CNC-machined from 6061 billet aircraft-grade aluminum.
Locking Mechanism: Updated cam-lever mechanism designed for increased durability and ease of use.
Internal Protection: Equipped with a black rubberized interior lining to protect the barbell sleeve and maximize friction grip.
Dimensions: 1.4” Width (One of the narrowest high-end collars available).
Weight: 0.3 LB per pair (Extremely lightweight).
Color Options: Available in Gunmetal and Blue anodized finishes.
Compatibility: Designed specifically for standard 50mm Olympic barbell sleeves.
Performance Benefits
Space Optimization: The 1.4" width is ideal for lifters using wide-hub bumper plates or loadable dumbbells where sleeve space is at a premium.
Superior Durability: Metal construction outlasts plastic "clamp" style collars, which can crack or lose tension after repeated drops.
Consistent Grip: The rubberized lining ensures the collars do not slide down the sleeve, even during heavy deadlifts or high-rep Olympic lifting.
Lightweight Precision: At only 0.15 LB per collar, they do not significantly alter the calibrated weight of the barbell.
Maintenance and Care
Lining Care: Periodically wipe the interior rubber lining with a damp cloth to remove chalk and dust. A clean surface is critical for maintaining a "lockdown" grip.
Anodization Note: Slight color variations are natural to the anodization process. To maintain the finish, avoid dropping the collars directly onto abrasive surfaces like concrete.
Lever Check: Verify the lever "clicks" into the locked position. If the lever feels unusually tight, ensure the collar is fully opened before sliding it onto the bar.
Warranty Information
Rogue Fitness provides a 2-year warranty against defects in material, functionality, and workmanship from the date of purchase. This warranty is non-transferable and applies to the original purchaser.
Frequently Asked Questions
Q: Will these fit on my Axel Bar or Pipe Bar? A: These are designed for standard 50mm (2") Olympic sleeves. For 1.9" specialty pipe sleeves, Rogue offers dedicated OSO Mighty Axle Collars.
Q: Are these sold as a pair? A: Yes. All OSO Mighty Collars are sold and shipped as a pair.
Q: Can I use these for heavy dumbbell bench presses? A: Yes. Many athletes prefer these for loadable dumbbells because their narrow width allows for more plates to be loaded on the sleeves.