Arlen Ness Big Sucker Stage 1, one of the best air filters, with a crean design and a great value-for-money.

One-piece aluminum backing plate features patented hidden breather technology. 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.
Radius air inlet provides maximum performance by providing unobstructed airflow.

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

Available with chrome or matt black cover

All necessary hardware and instructions are included with each kit