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|Version||1-5/8" Tall Filter|
K&N's RK Series was developed to get more horsepower from your Twin Cam® Harley-Davidson® engine. Built around the legendary K&N High-Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum backplate that eliminates external breathers and features a built-in, dyno-tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK Series assembly retains a factory appearance by utilizing the stock air cleaner cover. The RK-3910-1 comes with a larger air filter and longer spacers than the RK-3909-1.
K&N's Aircharger® Performance Intake Kit will get more horsepower from your Harley-Davidson® motorcycle. K&N's air intake for Touring Models gained an estimated 12.9 horsepower at the rear wheel and K&N's air intake for Softail Models gained an estimated 10.2 horsepower. This high flow Intake System increases power by eliminating the restrictive stock OE air cleaner and replacing it with a K&N high flow air filter and mandrel bent aluminum intake tube. This complete intake system will help relieve the labored feeling associated with two-up riding or loaded touring. K&N's high flow intake system gives your Harley-Davidson an aggressive appearance while providing a significant increase in airflow resulting in more power.
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"High quality air intake kits from K&N"
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