Smooth Stage 1 Big Sucker™, Black Fitment:99-17 Twin Cam (Exc. FBW) Power shift with less force

Power shift with less force

removing the carb multiple times to swap jets of make needle adjustments

4:1 gear reduction and produce 46%

Designed for custom applications requiring different than stock lengths

Adds style & protection from the elements

Smooth Stage 1 Big Sucker™, Black Fitment:99-17 Twin Cam (Exc. FBW) Power shift with less forceBig Sucker Stage 1 air cleaners are engineered and proven to give your engine maximum airflow for more horsepower & torque. The patented hidden breather backing plate is o ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system, eliminating the need for any external hoses or hardware Smooth Stage 1 Air Cleaner Cover Increases Horsepower & Torque Patented Hidden Breather Technology Pre Oiled & Synthetic