Wiseco Pro-Lite Piston Kit - 2318M06925 For Polaris Snowmobiles 1991-1999 | Yamaha Snowmobiles 1985-1986 custom dynamics Has a base width of

Has a base width of 12-1/2" and a 3-1/2" minimum height

Self-cleaning tread pattern

Cylinder Bore Coating Nickel-Silicon Carbide Riding Style Off-Road Compression Ratio 13

Threads are rolled under hydraulic force

Wiseco Pro-Lite Piston Kit - 2318M06925 For Polaris Snowmobiles 1991-1999 | Yamaha Snowmobiles 1985-1986 custom dynamics Has a base width ofFeatures Designed for all purpose 2 stroke riding Durability, longevity and increased horsepower Dedicated forging design for strength to weight optimization Extra lightening operations for enhanced throttle response Engineered, forged, and machined in the USA Piston is made in the USA Specs Bore Oversize +1. 50 mm Engine Type 2 Stroke Piston Diameter 69. 15 mm Skirt Coating Non Coated Bore Oversize +1. 53 mm Displacement 435 cc Displacement 452 cc