Wiseco 4156M06650 66.50mm High Performance Piston Kit - Black - Perfect for Motorcycle & ATV Engine Rebuilds & Upgrades

This Is a Replacement for a Single Piston, Does Not Replace Entire Set.Dedicated Forging.Light Weight and Superior Strength.Dome Design.Improved Flame Travel.Includes Chrome Plated Piston Pin.Horizontal Slot Pin Oiling.Reduced Friction/scuff Resistant.Pressure Seal Groove.Maximum Ring Seal.Skirt Coated - Armor Glide.Dedicated Rings.Maximum Compression and Oil Control.Race-Ready Dome Finish.Smooth Edges for Improved Combustion Flow.Bore Size (Mm): 66.5 (This Is a .100 Increase From OEM Size).10:1 Compression Ratio.Please Note: The Image Displayed Is Representative of the Piston, However Circlips, Wristpins & Rings, as Well as the Specific Type of Piston Will Vary Based on Your Model.