The Kawasaki KX450F 06-08 Crankshaft Main Primary Clutch Drive Gears Spurs Cogwheels are high-quality engine parts manufactured in Japan by Acerbis. Designed specifically for Kawasaki motorcycles, these silver-colored gears are compatible with the KX450F model and are identified by the reference OE/OEM numbers 130970013 and 590510027. Made by a trusted brand like Kawasaki, these clutch drive gears are essential components for maintaining and repairing the engine of your motorcycle.