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K&N 63-1125 Air Intake

Performance Products > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   10 Customer Reviews
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Aluminum tube with high quality finish
  • Washable and reusable lifetime air filter
  • Not legal for highway use in states adopting California emission regulations
  • 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 Million Mile Limited Warranty
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 mandrel bent aluminum intake tube. These intakes come with a billet 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.


Product Specifications

Estimated Horsepower Gain7.78 HP @ 4953 RPM
Air Filter ColorRed
Air Filter Height6 in (152 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
California RestrictedNot legal for sale or use in California
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included2
Intake Pipe Color / FinishBlack
Intake Pipe MaterialAluminum
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Product StyleMotorcycle Intake System
Replacement FilterRE-0960
Street Legal In All US States No
TUV Approved (Europe)No
Weight3 lb (1.4 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 63-1125 Air Intake Product Reviews

Friday, October 28, 2016 - Part 63-1125
Got this for my 2016 Fatbob. I like the fit. There is no right knee rub on the air cleaner anymore. Nice. Anyone with hand tools can install this. There is one thing to mention. The two large breather bolts will fit very snug when installing the bracket, but they will screw in. I like this addition the bike. It's also cheaper than the (Brand Name) setup. Everything you need, apart from tools, is provided in this kit, including threadlock. Be sure to install when the bike is cold. Hope this helps someone.

Eric Motes
Pearl River, Louisiana
Friday, June 24, 2016 - Part 63-1125
Excellent product, installs easily, looks great and immediate performance increase felt.

Saudi Arabia
Wednesday, June 15, 2016 - Part 63-1125
You guys make the best stuff . I have never been disappointed in your products . This air intake work very well.

Randall Sybert
Weston, Ohio
Friday, June 10, 2016 - Part 63-1125
As advertised. Big difference in throttle response. Woke up my 2016 FXDL.

David Dunn
Griffin, Georgia
Friday, May 13, 2016 - Part 63-1125
Awesome looking air intake system. Bike breathes much easier and is a lot more responsive and smoother running. Easy to install. My old set up was tuned as per stage 1 so plug and play.

Robert Gunter
Port Talbot, United Kingdom
Monday, February 22, 2016 - Part 63-1125
Awesome product, perfect fit! I had issues with a part but the great customer service reps handled everything fast. Looks awesome on my 2013 fxdb and opened her up for some power and sound.

Elberson Garcia
Hamilton, New Jersey
Thursday, April 9, 2015 - Part 63-1125
This is a great looking addition to my bike and the performance is great also!!!!

Joseph Sylvester
Concord, New Hampshire