TM designs FACTORY EDITION front chain sliders are the only indestructible front chain slider that has won National Championship titles in Enduro, GNCC, WORCS, Hare Scrambles, Baja, and the 24 hour at Glen Helen. Used by more Factory off road teams and riders than all other products combined. This is the only 2 stage noise suppressing design on the market today. Proprietary plastic formula is molded with a special oil additive to decrease chain friction for maximum power to the rear wheel. Each slider is machined, finished with the trademarked POWERSLIP top, to ensure the chain stays in line with the front and rear sprockets. All TM designs sliders fit like the stock units but perform far superior. Save yourself some time and grief by adding this to your bike.