RK-3910-1 K&N Intake System-Harley Davidson

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SKU
RK-3910-1
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Intake System-Harley Davidson
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 back plate 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.
  • Designed to increase horsepower & torque
  • Dyno-tuned velocity stack
  • Washable and reusable
  • Excellent air filtration
Estimated Horsepower Gain10.76 HP @ 5206 RPM
Replacement FilterE-3980
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Size9 Inch
Air Filter ShapeOval
Air Filter Height2.188 in (56 mm)
Air Filter Outlet ShapeRound
CARB EO NumberD-269-35/55
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Inlet Diameter2.25 in (57 mm)
Overall Height2.188 in (56 mm)
Top StyleMetal
Top MaterialBlack Powder Coated
Clamps IncludedNo Clamps Included
Clamp StyleNo Clamps Required
Clamp MaterialNo Clamps Required
Weight3.3 lb (1.5 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNone
Mounting Hardware IncludedYes
Neck Flange2.25 in (57 mm)
StyleOval
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K&N is the home of the original red oiled air filter. In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an oiled air filter. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe. Thank you for helping us reach 50 years in business!


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