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. CV carb: 93-06 B.T. Delphi inj.: 04-17 Dyna (excl. 2017 FXDLS 01-15 Softail 02-07 FLT Touring (NU)