K&N RK-3909-1 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.

Attributes:

• GTIN: 00024844294135
• Brand Name: K&N
• 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: Round
• Air Filter Washable: Yes
• CARB EO Number: D-269-35/55
• Clamp Color/Finish: Not Applicable
• Clamp Material: No Clamps Required
• Clamp Style: No Clamps Required
• Clamps Included: No Clamps Included
• Color / Finish: Red Filter, Metal Top
• Couplers Included: None
• Estimated Horsepower Gain: 6.05 HP @ 5206 RPM
• Horse Power Increase: 6 HP
• Inlet Diameter: 2.25 in (57 mm)
• Mass Air Flow Sensor Adapter Included: No Mass Air Flow Sensor Adapter Required
• Mounting Hardware Included: Yes
• Neck Flange: 2.25 in (57 mm)
• Oil Included: Filter Is Pre-Oiled
• Overall Height: 1.688 in (43 mm)
• Package Material: Paperboard
• Package Type: Box
• Product Style: Motorcycle Intake System
• Replacement Filter: E-3972
• RPM: 5206
• Size: 7 Inch
• Street Legal In All US States: See Vehicle Applications
• Style: Oval
• Top Material: Black Powder Coated
• Top Style: Metal
• TUV Approved (Europe): No
• Warranty: 1,000,000 Miles/10 Year
• Weight: 3.3 lb (1.5 kg)

Extended Information:

• Country of Origin: United States
• Life Cycle Status: Available To Order
• Emissions : Released

Packing Information:

• Quantity of Each: 1
• Package UOM: EA
• Dimension: 11.7500 x 9.5000 x 4.8750 inches
• Weight: 3.2800 lb

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