ALUMINUM BACKING PLATE FEATURES: TWIN CAM/SPORTSTER
- 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. This creates a virtually closed look system which eliminates the need for any external hoses or hardware
- Smooth radius air inlet engineered to provide unobstructed airflow directly into the engine
- Matte black powdercoat finish
KNUCKLE STAGE 1 AIR CLEANER COVER
- The Knuckle Stage 1 cover features 3d sculpted design that extents from the face of the air cleaner to the sides of the air filter pleats
- CNC machined from billet aluminum
- Black anodize finish
PERFORMANCE AIR FILTERS:
- Each Big Sucker performance filter is handmade in the USA
- Available in red pre-oiled cotton or synthetic filter media
- Standard red pre-oiled cotton performance filters are made from 4 layers of surgical grade cotton for optimum flow & filtration
- Synthetics performance filters are made from a black synthetic filter element that is wrapped in a stainless steel jacket. Synthetic filters are water resistant and do not require oil
- All Stage 1 air filters are washable/re-usable, filter tune-up kits are available separately
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