Zero drag patented design
Extruded from a special plastic formula for low friction and long life
Each roller is engineered to improve drive chain speed and chain tension accuracy
Race tested and custom sized for each model
9002 ISO certified sealed racing bearings are installed along with a matching set of stainless steel washers to protect and reinforce the outside bearing seal
A specific fit combination of stainless steel or O.E.M. style bolts are included with each roller
Unconditional 1-year manufacturers free replacement warranty from date of purchase