Namura PISTON KIT NA-50081-C fits Polaris ATV / 2012-2013 Polaris RZR 4 800, RZR S 800 LE EFI / 2013-2014 Polaris RZR 4 800 LE EPS / 2011-2012 Polaris RZR 4 800 Robby Gordon Edition / 2012 Polaris RZR 4 800 Robby Gordon Edition EPS

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