2005 Ski-Doo Racing Handbook, Page 38Get this manual
SECTION 03CHASSIS PREPARATION
SPRING APPLICATIONS
2005 FRONT SPRINGS 2005
MODEL MACH MX ADRENALINE MX TRAIL MX Zx MX Zx RENEGADE MX RENEGADE MX FAN SUMMIT ADRENALINE SUMMIT SUMMIT HM SUMMIT HM X
(PN) SOFTER SPRING 505 071 492 505 071 129 505 071 129 505 071 129 505 071 129 505 071 129 505 071 129 Not Applicable Not Applicable 505 071 461 505 071 461