$301.99 USD
MSRP $526.69 42.7% Off
Free Ground Shipping!
In Stock & Ready to Ship!
Find a Dealer

K&N 63-1125P Air Intake

Performance Products > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   21 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 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 FilterRC-3680
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Product StyleMotorcycle Intake System
Air Filter Height6 in (152 mm)
Air Filter Outlet ShapeRound
Alternate Replacement FilterRE-0960
Intake Pipe Color / FinishBright Aluminized Metal
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 63-1125P Air Intake Product Reviews

Monday, March 5, 2018 - Part 63-1125P
Awesome product.

Rolando Tamez
Kuna, Idaho
Friday, September 29, 2017 - Part 63-1125P
Made a huge improvement on power and looks. Also it's a lot easier to maintain the filter. The only downside is in the picture the metal bracket and the tube is chrome, but when I got it only the intake tube is chrome not the mounting bracket.

Lee Chiasson
Calgary, Canada
Friday, September 29, 2017 - Part 63-1125P
Adds a lot of power and torque.

Stockholm, Sweden
Monday, August 28, 2017 - Part 63-1125P
So far so good. Easy install. Love the look. Haven't noticed the increase in HP yet but I'm planning to get some new pipes and dyno.

JP Gonzalez
Frederick, Maryland
Monday, August 7, 2017 - Part 63-1125P
Haven't had it in the dyno but I can definitely feel the added horsepower. Extremely happy with my purchase. If I had to guess I would say 8 to 15 HP added to my 103 cubic inch streetglide. Thank you.

Larry Richards
Paw Paw, Michigan
Monday, July 31, 2017 - Part 63-1125P
The instructions were easy to follow and it took about a half an hour to install. And I like the look. WOW! I was not expecting the engine to respond the way it has. I definitely feel the increase in power. Thanks K&N.

Thomas R Cunningham
Somerset, Wisconsin
Wednesday, July 12, 2017 - Part 63-1125P
Looks great, plus a noticeable increase in horsepower. K&N really came through for me.

Ronald Leatherwood
Fairbury, Nebraska