High Performance 4-stroke Piston Kits Moose Racing Standard Moose Racing pistons feature x-style forgings and fully boxed-style (race pistons) forgings for ultimate strength, minimizing friction, durability, power, and weight reduction We are proud to offer our Pro Race Piston kits for select models The Pro Race Piston increases the durability by reducing the stresses in the pin bore area The Pro Race Piston allows the pin to flex while removing stress from the area Full radius dome designs maximize quench while eliminating hot spots that promote detonation Internal bracing maximizes durability while decreasing friction in the pin assembly Fully-boxed style (race pistons) forgings come standard with skirt coating which reduces friction, which in turn reduces heat. These are called out in the application chart Our race piston kits include a DLC pin. This technology has been proven and used because of its high resistance to abrasive wear, which extends the service life and reliability under extreme conditions Each Moose Racing piston kit includes a high performance piston, wrist pin, rings, circlips, and a top end gasket kit Replacement parts available BE SURE TO USE RACE FUEL WITH SOME APPLICATIONS (CALLED OUT IN CHART) Made in the USA