Namura Piston Kit +1.00 (73.7MM) NA-20005-4 fits 2020-2022 Arctic CAT Alterra 300 / 2005, 2007-2009 Kymco MXU 300 / 2008 Kymco MAXXER 300 / 2009, 2010 Kymco Mongoose 300 / 2018 Textron Off Road Alterra 300 / 2006 Kymco MXU 300 SD

MOS2 (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