box two bmx chain tensioner

2021 Box

Two Hole

The Box Two Chain Tensioner offers precise chain tension adjustment for cyclists. With two mounting holes, it ensures a secure fit and protection for frame dropouts. Available in black and silver, this robust component is a valuable addition for maintaining smooth transmission and extending gear life.

  • Category: Chain, Tensioner
  • Price: $20
  • Material: 6061-T6 Aluminum
  • Process: Extruded & CNC Machined
  • Hardware: Stainless Steel
  • Finish: Anodized w/Laser-Etched Graphics
  • Precise adjustment for ideal chain tension.
  • Protects frame dropouts.
  • Two mounting holes for ample adjustment.
  • Available in black and silver.
  • Robust construction.
  • May require mechanical knowledge to adjust.
  • Compatibility not universal.
  • Limited color options.
  • No additional features beyond tensioning.
  • May not suit all bike styles.
$20 from Danscomp Affiliate Link

photo credit  Photo by danscomp.com


The Box Two is a high-quality component designed for precise adjustment of chain tension on most bike frames. It features two mounting holes, offering ample scope for adjustment to achieve the ideal chain tension.

A robust construction of the tensioner helps to protect frame dropouts, ensuring a secure fit and minimizing the risk of damage to the frame from chain movement. Available in black and silver, it offers a sleek look that can complement any bike design.

It's important to note that, while the Box Two Chain Tensioner is highly functional and offers great utility for cyclists, there are some limitations to consider.

Box Two Hole Specifications

  • Material: 6061-T6 Aluminum
  • Process: Extruded & CNC Machined
  • Hardware: Stainless Steel
  • Finish: Anodized w/Laser-Etched Graphics
  • Axle: 10mm
  • Adjustability::
  • Wheel Position: 30mm
  • Weight: 55g




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