T.M. Designworks Powerlip Chain Roller Kit - Green PLR-215-GR The only specific fit chain roller on the market today Each roller is engineered and molded from a low friction custom plastic material The roller size and Powerlip offset are race tested to improve drive chain power and reduce chain plate wear The sealed bearings are ABEC certified with special racing grease and come with OEM replacement hardware A custom set of washers reinforces and protects the outside bearing seals