YAMAHA YZ250F 01-4 FT 13.5:1 CR 7700YC PISTON 4858M07700

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.