Box Two Chain Tensioners let you dial in your chain tension, so it’s just right.
Two mounting holes provide room for ample adjustment on most frames. When used correctly, Box Two Chain Tensioners help protect frame dropouts and keep your rear wheels locked in place where they should be.
Features
New and Improved
30mm of Adjustment
Dual Axle Position
Anti-Rust Hardware
Anodized Finish
Specifications
| Axle Size | 10mm (3/8″) only |
|---|---|
| Material | 6061-T6 Aluminum |
| Hardware | Stainless Steel |
| Compatibility | Box chain tensioners are designed to work with 10mm axles only. |














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