





Manufacturer Ref: 18-325
The Stage I Big Sucker™ air filter kit from ARLEN NESS embraces the custom spirit while enhancing engine breathing. Its one-piece aluminium backplate incorporates a discreet breather system: each hidden passage is equipped with an O-ring towards the cylinder heads and opens inside the throttle body, creating an almost closed assembly without external hoses. The "Radius" air inlet promotes an unobstructed flow for optimised intake.
Designed for touring and custom bikes that want to combine style and efficiency, this Big Sucker™ kit improves airflow and can contribute to better throttle response and perceived torque. Common fitment examples: Harley-Davidson FXSE, FXDLS, FLSTFBS (2017, 1800 cc).