Country/Region of Manufacture: Japan, Universal Fitment: No Yamaha Genuine Primary Driven Gear Comp – Part No. 18P-16150-00. This OEM primary driven gear ensures smooth and efficient power transmission from the crankshaft OE/OEM Part Number: 18P-16150-00-00 YFZ450R Antriebsritzel Yamaha Original Primary Driven Gear Comp 18P-16150-00 YFZ450R YZ Yamaha Neu, Brand: Yamaha California Prop 65 Warning: None, Performance Part: Yes, UPC: Does Not Apply Items Included: Primary Driven Gear Comp