Big Sucker Stage II Air Cleaner Kits

Stage II Big Sucker kits include all benefits of a Stage I kit but feature a 20% larger filter element for even more performance enhancing airflow. Each Stage II kit requires the use a Ness custom cover, OEM cover's will not fit. Dyno testing has shown the up to a 21 percent gain in horsepower from simply adding a Big Sucker II kit to your V-twin engine.
  • One-piece aluminum backing plate features our 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
  • Backing plates are available in Standard, Black Powder Coat, or Chrome finish
  • Each filter is handmade in the U.S.A. one at a time using the finest materials available
  • Filters are available in red or stainless steel jacketed filter elements
  • Standard red filters are pre-oiled, washable and feature 4-layers of surgical grade cotton for optimum filtration and maximum airflow
  • Stainless steel jacketed filters feature a synthetic material that is water resistant and never needs to be oiled. Just wash and re-use
  • Unlike most other filters, our process of hand pouring each filter ensures a strong clean bond between filter element and body with no restrictive urethane residue on the filter element
  • 08-13 FLT 58mm Throttle Body
  • 08-up FLT
  • 99-up Twin-Cam
  • 93-99 Evolution
  • 99-01 Fuel Injected FLT
  • 88-up XL
A.R.B Compliant:
  • ARB E.O. D-639-5

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