Box Two BMX Chain Tensioner 10mm Axle

By Box
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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 properly, Box Two™ Chain Tensioners help protect frame dropouts and keep your rear wheels locked in place where they should be.


  • 30mm of Adjustment
  • Dual Axle Position
  • Anti-Rust Hardware
  • Anodized Finish