Arlen Ness, Stage 1 Big Sucker air cleaner kit. OEM cover - 16-22 XL Forty Eight, Seventy Two, Iron. With OEM round air cleaner cover (NU) 531101 With a 1/2" (12

With a 1/2" (12

Special 3-spring design with interference fit to reduce harmonics and control spring surge

plastic and chrome

Click-fit fitment on 516065 starter/horn/turn signal switch

88-06 XL(NU)

Arlen Ness, Stage 1 Big Sucker air cleaner kit. OEM cover - 16-22 XL Forty Eight, Seventy Two, Iron. With OEM round air cleaner cover (NU) 531101 With a 1/2" (12Black anodized backing plate For use with the OEM round air cleaner cover Stage 1 red pre oiled filter element. The best and simplest performance air cleaner kit for your bike period. Gain up to 21% horsepower by simply installing a Big Sucker kit on your intake. Backing plates: The Big Sucker aluminum backing plates feature a radiused inlet to optimize airflow for both carburetor and fuel injection applications. The built in breathing system features