The SkiDoo 850 with its huge 80.4mm stroke was just asking for a bigger bore and we have done our homework to bring you the big 911. The all new piston was designed from scratch to accommodate all of the needs of the 911. The all new 85mm piston is an ultra high quality dual ring forged piston. Bikeman exclusive head profile giving you the most focused energy possible to make the most efficient power and maintain knock protection. If you are a technical rider that wants no-lag power the instant you hit the throttle, this kit is for you! There is endless power on tap to get yourself into the best riding situations possible.
