FITS ALL YAMAHA RAPTOR 660 YEARS AND MODELS! CP or JE 11:1 forged piston. Hotrods +4mm stroker crank with rod installed. Crank bearings - one comes on crank. Complete crankcase oil seal kit.
HD clutch kit - fibers steels springs. Piston uses pump or race gas. WE ARE HERE TO HELP!!!
Please check your order thoroughly when receiving it. We recommend that this kit be installed by a qualified mechanic with experience working on these types of motors. Piston comes with specific instructions for setting the ring gap. If you do not follow these exactly your motor will fail.