K&N - RK-3930
Intake System-Harley Davidson
The K&N RK-3930 Air Intake System was designed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K&N High-Flow Air Filter, 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.
Clamp Material: No Clamps Required
Clamp Style: No Clamps Required
Clamps Included: No Clamps Included
Color / Finish: Red Filter, Aluminum Top
Couplers Included: None
Estimated Horsepower Gain: 8.43 HP @ 3700 RPM
Inlet Diameter: 2.469 in (63 mm)
Mass Air Flow Sensor Adapter Included: No
Mounting Hardware Included: Yes
Neck Flange: 2.469 in (63 mm)
Oil Included: Yes
Overall Height: 1.875 in (48 mm)
Package Material: Paperboard
Package Type: Box
Product Style: Motorcycle Intake System
Replacement Filter: E-3972
Size: 9 Inch
Street Legal In All US States: Yes
Style: Oval
Top Material: Aluminum
Top Style: Metal
TUV Approved (Europe): No
Warranty: No-Hassle Lifetime Limited
Weight: 3.5 lb (1.6 kg)
Air Box Included: No
Air Filter Color: Red
Air Filter Height: 1.625 in (41 mm)
Air Filter Inside Diameter: 6.188 in (157 mm)
Air Filter Material: Cotton Gauze
Air Filter Outlet Shape: Not Flanged
Air Filter Shape: Oval
Air Filter Washable: Yes
CARB EO Number: D-269-55/59
Clamp Color/Finish: Not Applicable
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