To update your sled to the RAS 2 X package configuration. 42" (107 cm) RAS 2 front suspension kit. Updates sleds to lastest REV-XS trail front end. Better straightline tracking on big bumps. Lighter weight. Great styling. HPG Plus R shocks with rebound adjustment. Includes spindle compatible with Pilot TS ski. - REV-XM, XS, XP without 42'' front suspension