For over a decade the Big Sucker has been the best selling and most efficient air cleaner on the market period. The Big Sucker is engineered to give your engine maximum airflow, which means more horsepower, more torque, and overall improved performance. Dyno Testing has shown the up to a gain in horsepower from simply adding a Big Sucker kit to your V-Twin.

One-piece aluminum backing plate features Ness's patented hidden breather technology. Each hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardware

Stage 1 kits give the option to use either your OEM air cleaner cover or to install a custom stage 1 cover ( Excluding 99-01 FLH/FLT, 08-up FLH/FLT, and 08-13 Dyna with OEM Cover)

File Picture Shown

Fits: 99-14 Harley Twin Cam models (excluding 99-01 Injected FLH/FLT, 08-up FLH/FLT, and 08-13 Dyna with OEM Cover)