Black anodized aluminum with a contrast cut machined finish. A minimalistic design but big enough to cut the cake with the genuine high flow K&N air filter element when things get serious. Precision machined from billet 6061-T6 aluminum with a scratch resistant polycarbonate window that allows a unique view into the engine. The window frame is a 6061-T6 contrast cut aluminum bezel with a small Performance Machine engraving for strength and the right detailing. Complete with chrome plated hardware and required gaskets. 16-17 Softail 2017 FXDLS 08-16 Touring (e-throttle models) (NU)