Hot Rods 02-08 Yamaha YFM 660 F Grizzly 4x4 660cc Stroker Crankshaft

Premier performance and displacement increasing crankshafts that are sold complete and ready for installation with proven Hot Rods connecting rods, top end bearings and crankshaft webs.

• Most applications don't require modifications and can be used with stock piston, unless noted
• Factory assembled, trued and balanced to OEM specifications
• Increases displacement, torque and horsepower
• High-quality DIN Class 9 or higher