High-Torque lightweight 3-shoe flywheel helps to increase acceleration and improves throttle feeling. Made from tough Swiss 7075 T6 aluminum and hard coated for additional durability. Strategically lightened compared to the standard #358532 flywheel, reducing rotating weight without sacrificing energy or durability. Highly-polished, smooth flyweight pins are factory-pressed. Knurled external advantage for simple starting on starter field. Integrated cover stops dirt from going into the motor bearing.