Arlen Ness Big Sucker Stage 1 Air Cleaner for Late Harley-Davidson Twin Cam

Arlen Ness Big Sucker Stage 1 Air Cleaner for Late Harley-Davidson Twin Cam

If you've looked at any gathering of Harley-Davidson motorcycles, it's highly likely you've seen a Big Sucker on the side of a few of them. There's a multitude of reasons for that.

• Increases horsepower and torque, and really helps unlock the full potential of other power-adders you may have planned for your machine
  • Smooth radius at the mouth of the backing plate allows unobstructed, rapid airflow
• Can help eliminate breathing issues like unsightly leaks and drips
• Pre-oiled, high-performance air filter included
  
  • Provides superior performance with an altered balance between airflow and filtration
• Patent-pending hidden breather system declutters the side of your motorcycle visually
• One-piece aluminum backing plate is beautifully machined, easy to install, and won't flex or warp like plastic can
  
• CA-friendly—exempted under California Air Resource Board exemption D-639-13
  
• Kit contents
  • One-piece backing plate
  • Breather tubes
  • Performance filter element
  • Filter cover (not included on No Cover kits)
  • Gaskets
  • Oil reservoir
  • Necessary fasteners
• Finish options list backing plate finish followed by the filter cover finish option
  • Please see fitment notes for clarity on air cleaner fitment as well as information regarding cover interchange details

Arlen Ness Big Sucker Stage 1 performance intakes for Twin Cam engines are a standby for experienced motorcycle mechanics, tuners, and riders because they work. The patent-pending hidden breather system passes through the backing plate and exits inside the mouth of the throttle body to help eliminate the drips that come with OE breather systems and air cleaners.

The air cleaner can flow quite a bit of air, so if you're adding parts like cams with bigger lift or duration numbers, ported cylinder heads, or an exhaust with particularly good scavenging capabilities, the Big Sucker is a great choice. It won't suppress the gains made from other performance items like OEM pieces have been known to do in similar situations.

These kits have a variety of cover options depending on model and factory equipment; please see the notes to familiarize yourself with the available options for your motorcycle.