Arlen Ness Big Sucker Smooth Air Cleaner - 18-306 For Harley Motorcycles 2017-2025 Brand_Dunlop S&S heads give great performance

S&S heads give great performance

Hidden Breather backing plate technology is a step up from original system

Billet machined top with a large internal machined radius allows for EZ pulling of wiring (non-welded top corner)

the D402 offers great load-carrying capacity

each rotor is the proper thickness for the rear of heavy touring models

Arlen Ness Big Sucker Smooth Air Cleaner - 18-306 For Harley Motorcycles 2017-2025 Brand_Dunlop S&S heads give great performanceFeatures Each breather is O ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes Breathing system eliminates oil issues associated with the M8 engines by directing any excess breather oil back into the engine Kit includes one piece backing plate, breather tubes, performance filter, filter top, gaskets, oil reservoir and necessary hardware High performance filters are