This product is a genuine OEM rear brake drum lever arm plate hub for a 1980 Yamaha XT 500 Enduro 500 motorcycle. It is designed specifically for dual sport motorcycles and dirtbikes, particularly the XT500 model. This vintage part is compatible with Yamaha and Honda machines from the year 1978 and is meant to be installed on the rear left side of the vehicle. Made by Yamaha, this brake drum lever arm plate hub is a reliable and authentic replacement part for your classic motorcycle.