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K&N Performance Air Filter KitNON-STOCK, SUPPLIED ON DEMAND

#RK-3931

  • All Prices Include VAT

  • All Prices Include VAT

For over 40 years K&N has been designing and manufacturing performance air filters for motorcycles. They provide a high, virtually unrestricted air flow while maintaining filtration levels critical to ensure long engine life.

The K&N RK Series assembly retains a factory appearance by utilising the stock air cleaner cover and is designed to get more horsepower from the Harley-Davidson engine.

This air cleaner assembly replaces the stock air filter and backplate with an oversized washable and reusable K&N Air Filter and custom aluminum backing plate featuring dyno-tuned velocity stack, resulting in a significant airflow increase.