This Assault Charge Air Cleaner is built for 24 to 25 M8 FL models and the 25 Softail equipped with the larger 68 mm throttle body. With increased airflow demands; these setups benefit even more from a high-capacity intake; and this system provides the breathing room these engines need.The magnetic velocity stack; large-format filter; and billet aluminum backing plate with concealed integrated breather system form a direct replacement for the stock air cleaner and support the airflow needs of high-output M8 configurations. Testing has shown gains of roughly 8 horsepower; along with improved throttle response and midrange pull.For riders running the 68 mm throttle body; this is the Assault Charge configuration optimized for your engine’s flow potential.Rain sock included in the box. Please check packaging thoroughly.