YAM RAPTOR/GRIZZLY/RHINO 660 9.9:1 CR PISTON 4966M10050

MFG Part Number: 4966M10050

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.