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.
easy and precise wheel installation all while keeping your dropouts protected. Extruded then CNC-machined from 6061-T6 aluminum, these tensioners are light yet durable. The two mounting holes ensures compatibility with most frames. ...