Search  for anything...
K&N

K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: 50-State Legal: Fits 2017-2018 HARLEY DAVIDSON (Road King, Ultra Limited, Street Glide, Special, Freewheeler)57-1139

    • Based on 77 reviews
Condition: New
Checking for product changes
$153.00 Why this price?

Buy Now, Pay Later

As low as $25.50 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day easy returns

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 13 left in stock
Fulfilled by Amazon
Arrives Wednesday, Jun 5
Order within 15 hours and 31 minutes
Available payment plans shown during checkout

Recently Viewed

Features

  • ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle.
  • GUARANTEED INCREASE IN HORSEPOWER: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
  • BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response.
  • IMPROVED ENGINE SOUND: Hear the power under the hood.
  • WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants
  • EASY MAINTENANCE: No filter cleaning required for up to 100,000 miles
  • EASY TO INSTALL: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
  • DYNO TESTED: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
  • HIGH QUALITY: Made in America.

Description

K&N air intake systems are engineered for increased performance, outstanding durability, and sleek aesthetics—and are available in an assortment of finishes and powder coatings. K&N’s state-of-the-art High-Flow Air Filter™ helps to shield your engine from contaminants, while a meticulously engineered aerodynamic tube design contributes to a guaranteed increase in horsepower and torque. K&N air intake systems are designed to improve acceleration, towing, and throttle response while providing world class protection for your engine. Our intakes are dyno-tested and provide up to 50% more airflow compared to OEM intake systems. K&N intakes are easy to install and maintain with air filter cleaning required only every 100,000 miles. Vehicle Fitment: 2017-2018 HARLEY DAVIDSON FLHR Road King; 2018 HARLEY DAVIDSON FLHRXS Road King Special; 2017-2018 HARLEY DAVIDSON FLHTK Ultra Limited; 2017-2018 HARLEY DAVIDSON FLHX Street Glide; 2017-2018 HARLEY DAVIDSON FLHXS Street Glide Special; 2017-2018 HARLEY DAVIDSON FLRT Freewheeler; 2017-2018 HARLEY DAVIDSON FLTRX Road Glide; 2017-2018 HARLEY DAVIDSON FLTRXS Road Glide Special

Brand: K&N


Shape: Oblong


Manufacturer: ‎K&N Engineering


Brand: ‎K&N


Model: ‎Performance Air Intake System


Item Weight: ‎4.24 pounds


Product Dimensions: ‎11.75 x 4.88 x 9.5 inches


Country of Origin: ‎China


Item model number: ‎57-1139


Exterior: ‎Machined


Manufacturer Part Number: ‎57-1139


Date First Available: January 25, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Love it
Got enough air I had to get a complete tune on my 2018 breakout
Reviewed in the United States on April 3, 2024 by NDN
    • Feel the difference
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
2019 Harley Davidson, breakout, easy enough to install after a few trial and error’s with some of the screws as they do not tell you what to do with them otherwise yes a little large but wow what a difference something so little can do. the pull is much more than it was with the stock air box feels like the tire can break loose when changing gears I love it. And highly recommend ... show more
Reviewed in the United States on June 28, 2023 by Amazon Customer Amazon Customer
    • Big air intake
Put this on my 124ci road king. I haven’t tried it yet cause it’s winter. I painted mine to match bike and put bypass diy on it. Also after reading reviews decided to drill and tap mounting holes thru plate. It’s rather heavy for the mounting they had. Hopefully will be what they say it can do
Reviewed in the United States on January 21, 2024 by David Kumferman
    • Well made product
I was really skeptical about the quality of this intake seeing as the price was ect low. To my sit, it is extremely well made and fit perfectly the first time. Works great. I bout a prefilter from another vendor and it fit perfect as well.
Reviewed in the United States on June 10, 2023 by rob
    • Looks good, performs as expected
K&N, quality as always! Great looking air cleaner at a great price. Installation was tricky with the large O-ring as I didn't have any grease. I used this with the FP3 fuel tuner and some V&H slip-ons and got a much better throttle response and tone. My only complaint is that this pushes my right leg away from the bike and my knee touches the intake tube. This may cause fatigue on long hauls and hopefully won't put wear and tear on the intake. ... show more
Reviewed in the United States on July 15, 2021 by Kristoff Heinz
    • Awesome intake!
Review Image by jeffrey astle jeffrey astle
Absolutely love this intake! It is super easy to install and works great. This is the second one I've purchased. I have one on a 2013 Blackline with the 103ci motor and one on a 2019 softail slim with the 107ci Milwaukee 8 motor. They look great. They are heavy duty and I would highly recommend them! ... show more
Reviewed in the United States on June 23, 2021 by jeffrey astle jeffrey astle
    • Mia information
I had to return them. The listing said it would fit my bike bet they did not. Very dissatisfied from start to finish
Reviewed in the United States on June 5, 2023 by Scott Sickles Sr.
    • Improved performance
I am delighted with my purchase, performance has increased from my previous air system that was already an upgrade from OCM filter. The installation was easy and delivery was very quick. I also have an FP3 Vance and Hindes and Cobras Neighbor haters. Fantastic combination and looks are fantastic and aggressive. ... show more
Reviewed in the United States on April 30, 2020 by David S. Rodriguez

Can't find a product?

Find it on Amazon first, then paste the link below.