Reverse Colab Expert Chain Tensioner Simple Just Got Better If you have a single-speed drivetrain, you'll need to keep tension on your chain to prevent it from falling off. The Reverse Colab Expert Chain Tensioner is the newest addition to Reverse's singlespeed drivetrain family. Providing a highly secure, robust, and easily adjustable system of tensioning the chain, designed for freeride / DH level use on full-suspension mountain bikes. The Expert boasts 15mm of adjustability of the chainline and an adjustable limit stopper, plus a pinch bolt on the mounting bracket and higher spring tension to keep your chain tight, cutting out chain slap even on the gnarliest of landings. Features Quiet and reliable and even adjustable, too15mm of adjustability of the chainline and an adjustable limit stopper Pinch bolt on the mounting bracket and higher spring tension to keep your chain tight | Reverse Components | Reverse Colab Expert Chain Tensioner Silver