ARLEN NESS Synthetic Stage-1 Air Cleaner Black Twin Cam 50-571

Each hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware, Standard red filters are pre-oiled, washable and feature four-layers of surgical grade cotton for optimum filtration and maximum airflow, Synthetic filters feature a black synthetic material that is water resistant and never needs to be oiled; just wash and re-use, Radius air inlet provides maximum performance by providing unobstructed airflow, One-piece aluminum backing plate features patented hidden breather technology, All necessary hardware and instructions are included with each kit