Add up 21% more horsepower when installing the Ness Big Sucker™ Air Filter kit. These kits are designed to be used with the stock outer air filter cover or by leaving the filter exposed when using one of our Stage 1 billet covers.
Features:
- Fits 2000-up Twin Cam (except 99-01 FI FLT & 08-11 FLT)
- Features Plain backing plate