BOX BOX THREE CHAIN TENSIONERS

Adjusting chain tension is quick and easy with the new Box Three™ Chain Tensioner. With a single-hole "lollipop" design, these tensioners reduce weight and help keep your rear wheel locked in place.

New and Improved
20mm of Adjustment
Single Axle Position
Slotted for Dropout
ED Black Hardware
Anodized Finish

Axle Size 10mm (3/8") only
Material 6061-T6 Aluminum
Hardware
Stainless Steel

FAQ
May I use this tensioner with 15mm or 20mm axles?

No, all Box chain tensioners are designed to work with 10mm axles only.