T.M. Designworks Dirt Cross Polifibar Rear Chain Guide Shell - Orange RCG-SKT-OR Version 2 of OEM replacement chain guide shell for MX, off road or recreational riding Made from T.M. Designworks exclusive RMS (return memory system) plastic formula to absorb impacts and not bend Plastic shell installs around the stock rubber chain guide insert and is light as carbon fiber to reduce unsprung rear wheel weight Version 2 is stiffer and more abrasion resistant than previous models