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K&NPART NUMBER: 599-RK-3910-1
High-Performance Replacement Air Filter 1999-2012 Harley Davidson Road King/Electra/Dyna/Softail/Fat Boy/Springer
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Harley-Davidson
High-Performance Replacement Air Filter1999-2012 Harley Davidson Road King/Electra/Dyna/Softail/Fat Boy/Springer
K & N ENGINEERING INC RK-3910-1 Features:
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.Part TypeAir Cleaner Assembly
BrandK&N
Package Height4.87
Package Width9.5
Package Length11.75
Weight3.32 PG
Weight3.3 lb (1.497 kg)
Part CategoryPerformance Parts
Overall Height2.188 in (55.6 mm)
Estimated Horsepower Gain10.76 HP @ 5206 RPM
Filter ColorRed
Carb Eo NumberD-269-35/55
Couplers Included0
Size9 in (228.6 mm)
Clamp StyleNo Clamps Required
Rpm5206
Top StyleMetal
Air Filter Outlet ShapeRound
Inlet Diameter2.25 in (57.15 mm)
Clamps IncludedNo Clamps Included
Air Filter Height2.188 in (56 mm)
StyleOval
Top Material/FinishBlack Powder Coated
Horse Power Increase11 HP
Air Filter Inside Diameter0 in (0 mm)
Neck Flange2.25 in (57 mm)
ColorRed
Mounting Hardware IncludedYes
Filter MaterialCotton Gauze
Air Filter ShapeOval
Replacement FilterE-3980
Clamp MaterialNo Clamps Required
Product StyleMotorcycle Intake System
Part FitmentDirect Fit
Vendor Part NumberRK-3910-1
Package Qty1
Package TypeEA
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