Home > Engine, Exhaust, Brakes & Suspension > Air Cleaner Assemblies > 1999-2012 Air Cleaner Intake System K&N #RK-3909-1
1999-2012 Air Cleaner Intake System K&N #RK-3909-1Image may differ from actual product


1999-2012 Air Cleaner Intake System K&N #RK-3909-1
In Stock
In Stock - Ships in 1-2 business days
Regular price:$229.59
Sale price:$163.99
Quantity:
Free Shipping (over $200)
No Sales Tax
No-Hassle Returns
Summary
Specifications:
  • Brand: K&N
  • CARB EO Number: D-269-35/55 Click Here to learn about CARB EO Numbers
  • Clamp Material: No Clamps Required
  • Clamp Style: No Clamps Required
  • Estimated HorsePower Gain: 6.05 HP @ 5206 RPM
  • Filter Color: Red
  • Filter Height: 1.625 " (41 mm)
  • Filter Inside Diameter: 6.188 " (157 mm)
  • Fitment: With 1-5/8 inch Tall Filter
  • Hardware: Included
  • Inlet Diameter: 2.25 " (57 mm)
  • Made in USA: Yes
  • Neck Flange: 2.25 " (57 mm)
  • Outlet Shape: Not Flanged
  • Overall Height: 1.688 " (43 mm)
  • Quantity: Sold Individually
  • Replacement Filter Number: E-3972
  • Shape: Oval / Round
  • Style: tall
  • Part Number: RK-3909-1
  • GTIN: 024844294135
  • California Air Resources Board Exempt: No
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.
Specifications:
  • Brand: K&N
  • CARB EO Number: D-269-35/55 Click Here to learn about CARB EO Numbers
  • Clamp Material: No Clamps Required
  • Clamp Style: No Clamps Required
  • Estimated HorsePower Gain: 6.05 HP @ 5206 RPM
  • Filter Color: Red
  • Filter Height: 1.625 " (41 mm)
  • Filter Inside Diameter: 6.188 " (157 mm)
  • Fitment: With 1-5/8 inch Tall Filter
  • Hardware: Included
  • Inlet Diameter: 2.25 " (57 mm)
  • Made in USA: Yes
  • Neck Flange: 2.25 " (57 mm)
  • Outlet Shape: Not Flanged
  • Overall Height: 1.688 " (43 mm)
  • Quantity: Sold Individually
  • Replacement Filter Number: E-3972
  • Shape: Oval / Round
  • Style: tall
  • Part Number: RK-3909-1
  • GTIN: 024844294135
  • California Air Resources Board Exempt: No
1999-2012 Air Cleaner Intake System K&N #RK-3909-1
$163.99