NA-50002-2K 83.50mm High Performance Top End Engine Kit - Perfect for Motorcycle & ATV Engine Rebuilds and Performance Upgrades

Bore: 83.44mm Sizing: 0.50mm OversizeTop 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 fits 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.1994-1995 fits POL 400L 2x4 1994 fits POL 400L 4x4 2000-2002 fits POL Scrambler 400 2x4 1995-2002 fits POL Scrambler 400 4x4 1994-1999 fits POL Sport 400L 2003 fits POL Trail Blazer 400 1995-2001 fits POL Xplorer 400 4x4 2002 fits POL Xplorer 400L