I bought a 94 K75 in earlier this year. Having ridden it throughout the season, I am in the process of doing some maintenance.
One of the things I want to do, is to bring the engine, trans, differential components, back to their original "glossy black finish". After a full season of riding, these black parts have taken on a dull, flat shade of black.
Anyone here have a product that you would recommend, or a technique that works well?