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K&N 63-1137S Air Intake

Performance Products / Performance Air Intake System
63-1137S
$345.99 USD
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Product Overview

  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-performance intake tube
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
K&N AirCharger air intakes for select Harley-Davidson Touring, Softail, Twin-Cam and Sportster motorcycle models increase power by eliminating the restrictive stock OE air cleaner and replacing it with a K&N high-flow air filter and cast aluminum intake tube. These intakes come with an die-cast aluminum throttle-body mounting plate and mounting hardware. K&N high-flow intake systems give your Harley® an aggressive appearance while providing a significant increase in airflow resulting in more power. These K&N air intakes are street legal in most states. They are not legal for use in California and other states adopting California emission standards.

[More Info on AirChargers for Harley-Davidson Motorcycles]
Estimated Horsepower Gain5.35 HP @ 4758 RPM
Replacement FilterRE-5287
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1 Year Limited
Product StyleMotorcycle Intake System
Air Filter Height5.25 in (133 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishSilver
Intake Pipe MaterialDie-Cast Aluminum
Street Legal In All US States No
TUV Approved (Europe)No
Clamps Included1
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight4.2 lb (1.9 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
California RestrictedNot legal for sale or use in California
Couplers IncludedNone
Mounting Hardware IncludedYes
Horsepower gains based on similar vehicle dynamometer test. Results will vary.
WARNING: Cancer and reproductive harm--www.P65warnings.ca.gov

K&N 63-1137S Air Intake Product Reviews