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Quantity
1
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. Features:
Laser etched logo
Adjusting ...
Reviews
5.0
2 ratings
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Awesome addition to my son’s Stacyc 12. Tensioning the chain from one side was getting wonky so decided to try out the Box Tensioners and they’re fantastic. Adds a nice little bit of color too which my son loves.
T
TB · December 3, 2025
Much better than stock plus side. Chain guard doesn’t quite fit as it should had to move the scre to back hole for it to line up.