K&N Custom Air Cleaner Assembly - RK-3931
K&N Air Cleaner Assemblies are designed to get more horsepower from your Harley-Davidson® motorcycle. These air cleaner assemblies replace the stock air filter and backplate with an oversized K&N Air Filter and custom aluminum backing plate. These assemblies utilizes the stock cover to maintain stock appearance.
- Designed to increase horsepower & torque
- Dyno-tuned velocity stack
- Excellent Air Filtration
- Washable and reusable lifetime air filter
- Not legal for highway use in states adopting California emission regulations