Yam Raptor/grizzly/rhino 660 9.9:1 Cr Piston 4966m10100

Forged from high-silicon aluminum alloy for maximum strength and dependability.

innovative forging design and piston skirt provide maximum horsepower and torque.

wiseco high-performance piston kits are priced with piston, rings, pins and circlips (unless noted otherwise).

oversize pistons require cylinder sleeving.