The Yamaha Vintage 1978 YZ100 Rear Fender is a genuine NOS OEM part with the specific OE/OEM part number 2K5-21620-00-00. Designed for off-road motorcycles, this rear fender is a vintage part that is not universally fitting. Specifically made for the rear placement on the vehicle, this fender is a rare find for collectors and enthusiasts looking to restore their Yamaha motorcycles to their original condition.