Arlen Ness, Stage 1 Big Sucker air cleaner kit. OEM cover 99-01 FLT (NU) with Magneti Marelli fuel inj.

- Black anodized one-piece aluminum backing plate - Used with OEM air cleaner cover with single central bolt - Can be used as an exposed filter design when using one of the Ness Stage1 billet covers - Increases horsepower & torque - Built-in patented breathing system features hidden channels to prevent the use of unsightly exposed breather hoses and fittings - Radius air inlet for unobstructed airflow 99-01 FLT (NU) with Magneti Marelli fuel inj.