50-517 Ness, Stage 1 Big Sucker air cleaner kit. OEM cover

This Arlen Ness Stage 1 Big Sucker air cleaner kit comes with a chrome-plated one-piece aluminum backing plate, designed specifically for 1999 to 2001 Touring models with Magneti Marelli fuel injection. The Big Sucker is engineered to provide maximum airflow, resulting in improved horsepower and torque. Its patented hidden breather system is O-ringed at the heads and exits inside the throttle body, so you don't have to worry about external hoses. The kit includes a black pre-oiled air filter and an aluminum top plate that keeps the mounting hardware hidden. It is designed to fit under your stock air cleaner cover or a custom round cover with a central mount, providing a clean and high-performance look for your early fuel-injected Touring bike.