Performance Machine Vision Series Air Cleaners give you the power to view what goes on inside the heart of your bike's intake system. The UV and abrasion resistant polycarbonate lens is framed by a 6061-T6 aluminum bezel to add structural integrity as well as provide an even distribution of clamping force to eliminate cracking. Cable throttle and electronic throttle versions are available for Twin Cam applications. All Vision Series Air Cleaners are precision CNC machined out of billet aluminum and come complete with chrome hardware and any required gaskets. These sexy see-through air cleaners are a great alternative to the prudish stock units and are offered in Contrast Cut, Chrome and Black Ops finishes.