T.M. Designworks Powerlip Chain Roller - Black - PLR-212-BK

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
1-year free manufacturers replacement warranty