Available for K4 and K5, a tough, high impact alternator / generator cover, frame sliders / crash knobs / mushrooms, lower chain guard, and paddock stand / swingarm crash bobbin set. Like all GBRacing secondary engine covers, the alternator / generator cover is injection moulded using 60% Long Glass Fibred Nylon 6.6, so it looks great and is simple to fit (no messy glue or wire), as well as being tough enough for the track.