Spring f/Ski Doo, rollers f/hiperf.com If I remember right the ski doo price for rollers will scare you. Aftermarket buttons, arms and pins. Ramps might be dealer only for the clutch. Any major hi performance shop such as Cudney's. Crankshop ect.. should be able to set you up with their own stuff. Go thru the cutch and see what exactly what you need. No reason to throw parts at it if they are not needed. A spring is a must though.