Give your bike that factory look with our raw 6061 aluminum drilled washer. Great for places like 2-stroke pipe mounting, fenders, and other body work such as caliper guards, disk guards, fork guards, etc. Designed for use with M6 fasteners, these 18mm OD drilled washers offer not only a lighter look, but a lighter weight also, compared to stock washers. These are constructed from 6061 aluminum and are 2mm thick.