Venturi Air Cleaners for V-Twin The Venturi Air Cleaner features the best in filtration and flow from industry leader K&N. It is a proven high-performance bolt-on part that drastically improves the looks and performance of your machine. The revolutionary backing plate promotes smooth air flow into the carb/throttle body while also providing hidden internal crankcase breathers and the new tight seal oil separator insures a clean, leak-free ride. Manufactured from billet aluminum in the USA, the Venturi is a jewel for the side of your bike. Distinct exposed filter design with a stainless steel wire mesh screen. Design matched to RSD wheels. Hidden built in crankcase breathers. High volume best in filtration K&N Air Filter included. Revolutionary backing plate that promotes smooth airflow into the carb/throttle body. Includes slotted breather bolts and oil tubes Includes mounting hardware