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K&N

K&N Intake System-Harley Davidson (RK-3947X)

K&N Intake System-Harley Davidson (RK-3947X)

SKU:RK-3947X

Regular price £265.00 GBP
Regular price Sale price £265.00 GBP
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K&N's Street Metal Series High-Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. This series completely eliminates the stock OE air cleaner and replaces it with a high-flow K&N air intake system, increasing power. This intake system uses an extra tall K&N air filter, which means even more air flow and longer service intervals than standard RK-series air intake filters. Larger or custom engine builds most often benefit from higher levels of air flow, so the extra tall filter designs are a perfect choice for more powerful bikes. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation, making an already easy install even faster. Just how fast? Less than 90 minutes, in most cases. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. A durable mounting gasket is also included to help absorb vibration. The brilliant shine on this custom flare-shaped chrome cover give this air intake makes an impression on and off the road.
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Extra tall air filter design provides even more air flow and longer service intervals than standard RK-series air intakes
  • Easy to install
  • Made in the U.S.A.
  • Backed by K&N Million Mile Limited Warranty

Overview

K&N's Street Metal Series High-Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. This series completely eliminates the stock OE air cleaner and replaces it with a high-flow K&N air intake system, increasing power. This intake system uses an extra tall K&N air filter, which means even more air flow and longer service intervals than standard RK-series air intake filters. Larger or custom engine builds most often benefit from higher levels of air flow, so the extra tall filter designs are a perfect choice for more powerful bikes. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation, making an already easy install even faster. Just how fast? Less than 90 minutes, in most cases. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. A durable mounting gasket is also included to help absorb vibration. The brilliant shine on this custom flare-shaped chrome cover give this air intake makes an impression on and off the road.

Product Details


Designed for Harley-Davidson motorcycles*
Increase horsepower and torque*
Extra tall air filter design provides even more air flow and longer service intervals than standard RK-series air intakes*
Easy to install*
Made in the U.S.A.*
Backed by K&N Million Mile Limited Warranty*
*
*

Specifications

  • Air Filter Color: Red
  • Air Filter Height: 3.125 in (79 mm)
  • Air Filter Material: Cotton Gauze
  • Air Filter Washable: Yes
  • CARB EO Number: D-269-59
  • Color / Finish: Red Filter
  • Chrome Top
  • Estimated Horsepower Gain: 8.1 HP @ 4.493 RPM
  • Mounting Hardware Included: Yes
  • Overall Height: 6.25 in (159 mm)
  • Package Material: Paperboard
  • Package Type: Box
  • Product Box Height: 4.88 in (124 mm)
  • Product Box Length: 11.75 in (298 mm)
  • Product Box Width: 9.5 in (241 mm)
  • Product Style: Motorcycle Intake System
  • Product Weight: 4.30 lb (1.95 kg)
  • Replacement Filter: E-3986
  • Street Legal In All US States: See Vehicle Applications
  • Top Material: Chrome
  • TUV Approved (Europe): No
  • Warranty: No-Hassle Lifetime Limited
  • Weight: 4.3 lb (2 kg)

Cross Reference

  • Harley Davidson: 2925308, Vance & Hines: 70041

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