2002-2007 Yamaha YFM660F GRIZZLY 100.47 CC Namura Piston Rings .020

• 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