Big Sucker™ Stage I Air Cleaners:
Twin Cam/Evolution/Sportster

Features:
  • Engineered and proven to give your engine maximum airflow for more horsepower & torque
  • One-piece aluminum backing plate features our patented hidden breather technology, each breather is o-ringed at the heads and exits at the mouth of the throttle body eliminating the need for any external hoses or hardware for efficient engine breathing
  • Each backing plate contains a smooth radius air inlet to direct unobstructed airflow into the engine
  • Stage 1 kits accept most factory covers and/or Ness air cleaner covers for an exposed look
  • Performance air filters are available in standard red pre-oiled cotton & synthetic filter elements
  • Standard performance filters are constructed from red pre-oiled cotton and are washable/re-useable, filter re-charge kits available separately
  • Synthetic performance filters are constructed from black synthetic filter element that is wrapped in a stainless steel jacket. Synthetic filters are washable/re-usable, do not require oil and are water resistant which in most cases eliminates the need for a rain sock
  • Backing plates available in standard, black or chrome finish
  • Each Stage I kit includes one-piece aluminum backing plate, performance filter, gaskets, and necessary hardware
Fitment:
  • 99-17 Twin Cam Models (Except: 99-01 Fuel Injected FLT & FBW models)
  • 99-01 Fuel Injected FLT Twin Cam
  • 08-16 FLT Twin Cam FBW models & 16-17 Softail/FXDLS (FBW)
  • 93-99 Evo (Carb)
  • 88-18 XL Sportster Models
Note:
  • Kits specifically designed for factory air cleaner covers are also available
A.R.B Compliant:
  • ARB E.O. D-639-6

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