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 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.This item fits the following vehicle applications:compatible with Yamaha YFM700 Grizzly EPS 2018compatible with Yamaha YFM700 Grizzly EPS LE 2016-2018compatible with Yamaha YFM700 Grizzly EPS SE 2018compatible with Yamaha YFM700 Grizzly FI 4x4 Auto 2016compatible with Yamaha YFM700 Grizzly FI 4x4 Auto EPS 2016-2017compatible with Yamaha YFM700 Grizzly FI 4x4 Auto EPS SE 2016-2017compatible with Yamaha YFM700K Kodiak 2016-2018compatible with Yamaha YXE70 Wolverine EPS 2017compatible with Yamaha YXE70 Wolverine R-Spec 2016compatible with Yamaha YXE70 Wolverine R-Spec EPS 2016-2018compatible with Yamaha YXE70 Wolverine R-Spec EPS SE 2016-2017