Namura . NX-40085K

Bore: 47.44mm Compression: 8.2:1 Compression Sizing: Standard Bore Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kit. MOS2 (made with Teflon/Molybdenum) Coated Skirts A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Machined Smooth Heads Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%. Anodized Domes Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons. Hypereutectic Casting Process Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures. Ceramic Composite Cylinder This item fits the following vehicle applications: compatible with Yamaha YZ85 2002-2018

Namura Top-End Rebuild KitContains: Piston Kit(s) and Top-end gaskets above the base gasket to reassemble cylinder(s) Piston Size: 47.44 mmCompression Ratio: 8.2:1 * Actual Contents may vary from Photo * Consult a reputable performance shop for proper Ring End Gap Namura offers direct replacements for the original equipment as well as hi-compression and a variety of oversizes to meet your ride's needs.