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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   14 Customer Reviews
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Aluminum tube with high quality black finish
  • Washable and reusable lifetime air filter
  • Not legal for sale or use in California
  • 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 replace the restrictive stock OE air cleaner with a K&N High-Flow Air Filter and mandrel-bent aluminum intake tube. The efficient design provides your Harley with significantly more airflow, resulting in additional power. These air intakes come with a billet aluminum throttle-body mounting plate and mounting hardware. Each of these air intakes comes with a washable, reusable K&N high-flow air filter, backed by the Million Mile Limited Warranty. Installation is so easy, most intakes can be installed in 90 minutes or less. The sleek styling gives your Harley that coveted custom look while increasing performance.


Product Specifications

Estimated Horsepower Gain7.78 HP @ 4953 RPM
Replacement FilterRE-0960
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Product StyleMotorcycle Intake System
Air Filter Height6 in (152 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishBlack
Intake Pipe MaterialAluminum
Street Legal In All US States No
TUV Approved (Europe)No
Clamps Included2
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight3 lb (1.4 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.

K&N 63-1125 Air Intake Product Reviews

Wednesday, November 29, 2017 - Part 63-1125
Fast easy ordering. Competitive pricing + free shipping. Fast delivery. What's not to like? Couldn't be happier with the purchase and it's going to look nice on my Harley Davidson Fat Boy.

Robert Schultz
New Hope, Minnesota
Monday, November 6, 2017 - Part 63-1125
As always, K&N filter systems are TOP OF THE LINE. I won't settle for second best. My bike DESERVES K&N.

James Brown
Phenix City, Alabama
Friday, July 14, 2017 - Part 63-1125
Excellent product and very, very easy to install.... Very happy with the look and the bikes performance has greatly improved.

Brian Livery
Chicago, Illinois
Monday, May 29, 2017 - Part 63-1125
Fast and easy and cheaper than most places selling K&N products online. Easy install and bike runs great. Would definitely recommend.

Larry Creasey
Palmerton, Pennsylvania
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