Namura TOP END REPAIR KIT 96MM NA-40007-4K fits 1984-1995 Yamaha XT600 / 1987-2005 Yamaha Banshee 350 YFZ350 / 1998-1999 Yamaha Grizzly 600 YFM600FWA 4X4 / 2000-2001 Yamaha Grizzly 600 YFM600F 4X4 / 2006 Yamaha Banshee 350 YFZ350SP

Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kitMOS2 (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 seizuresMachined 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 pistonsHypereutectic Casting Process Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures