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K&N

K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2017-2021 Harley Davidson: (See Product Description for Selected Models) 57-1139

  • Based on 83 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Aug 18
Order within 10 hours and 23 minutes
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Features

  • DYNO TESTING YOU CAN TRUST: K&N air intake horsepower/torque testing is performed on wheel-based dynamometers and the reports are included with each intake system.
  • IMPROVED ENGINE SOUND - HEAR THE GROWL: K&Ns intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed.
  • BETTER TOWING: K&N Air intake kit improves acceleration and uphill performance when towing by improving throttle response, overall horsepower and torque. Excellent for daily and highway driving.
  • PREMIUM ENGINE PROTECTION FROM A TRUSTED BRAND: K&N air intake will not void manufacturer vehicle warranty & No-Hassle Lifetime Limited Warranty protects for the life of your vehicle.
  • HIGH-FLOW REUSABLE AIR FILTER: 4 layers of pleated, breathable cotton with K&Ns red filter oil to absorb dirt & dust particles, allowing clean air to continue flowing into your engine, only needs cleaning every 100k miles under normal highway conditions.
  • EASY TO INSTALL: Includes detailed, step-by-step instructions & all necessary parts- the entire air intake system can typically be installed in less than 60 minutes with basic hand tools.
  • MADE IN THE USA: Proudly made in the USA for trusted quality & reliability and backed by US based customer support.

Description

K&N is the inventor of the Air Intake System and has over 50 years of experience in the performance filtration industry. Proudly designed and manufactured in the USA, this premium cold air intake system is specifically designed for your vehicle and is dyno tested to provide a guaranteed increase in horsepower. It features a high flow intake tube, custom heat shield, and oversized K&N Washable High-Flow Cotton Air Filter for ultimate airflow. This Intake system replaces the restrictive OEM air box to provide an improved driving experience for daily driving or towing. It installs easily in about 60 minutes and is backed by a No-Hassle Lifetime Limited Warranty and will not void your factory warranty.Compatible Vehicles:2018-2020 HARLEY DAVIDSON FLDE Deluxe2018-2019 HARLEY DAVIDSON FLFB Fat Boy2018-2020 HARLEY DAVIDSON FLFBS Fat Boy HARLEY DAVIDSON FLHC Heritage Classic2018-2021 HARLEY DAVIDSON FLHCS Heritage Classic HARLEY DAVIDSON FLHR Road King2018-2021 HARLEY DAVIDSON FLHRXS Road King Special2018-2021 HARLEY DAVIDSON FLHT Electra Glide Standard2017-2019 HARLEY DAVIDSON FLHTCU Electra Glide Ultra Classic2019-2021 HARLEY DAVIDSON FLHTCUTG Tri Glide Ultra2017-2021 HARLEY DAVIDSON FLHTK Ultra Limited2019-2019 HARLEY DAVIDSON FLHTKL Ultra Limited Low2017-2021 HARLEY DAVIDSON FLHX Street Glide2017-2021 HARLEY DAVIDSON FLHXS Street Glide Special2017-2021 HARLEY DAVIDSON FLRT Freewheeler2018-2021 HARLEY DAVIDSON FLSB Sport Glide2018-2021 HARLEY DAVIDSON FLSL Softail Slim2020-2021 HARLEY DAVIDSON FLTRK Road Glide Limited2019-2019 HARLEY DAVIDSON FLTRU Road Glide Ultra2017-2021 HARLEY DAVIDSON FLTRX Road Glide2017-2021 HARLEY DAVIDSON FLTRXS Road Glide Special2018-2020 HARLEY DAVIDSON FXBB Street Bob2018-2019 HARLEY DAVIDSON FXBR Breakout HARLEY DAVIDSON FXBRS Breakout HARLEY DAVIDSON FXFB Fat Bob2018-2021 HARLEY DAVIDSON FXFBS Fat Bob HARLEY DAVIDSON FXLR Low Rider2020-2021 HARLEY DAVIDSON FXLRS Low Rider S HARLEY DAVIDSON FXST Softail Standard 107

Product Grade: Performance Part


Brand: K&N


Fit Type: Vehicle Specific Fit


OEM Part Number: 57-1139


Number of Items: 1


Brand Name: K&N


Model Number: 57-1139


OEM Equivalent Part Number: 57-1139


Manufacturer Part Number: 57-1139


Global Trade Identification Number: 73


Manufacturer: K&N Engineering


UPC: 024844368973


Unit Count: 1.0 Count


Included Components: Air Filter^Intake Tube^Gasket^Back Plate^Parts Kit^Literature Packet


Item Type Name: Performance Air Intake System


Manufacturer Warranty Description: 1,000,000 Miles/10 Year


Item Weight: 4.24 Pounds


Shape: Oblong


Product Grade: Performance Part


Fit Type: Vehicle Specific Fit


Automotive Fit Type: Vehicle Specific Fit


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 18

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.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • 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
    • 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
    • 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
    • Love the sound
Great addition, noticed the difference in performance.
Reviewed in the United States on July 27, 2024 by Nathaniel Cuéllar Wilson
    • 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.
    • My motorcycle harley davidson road glide
I feel a lot of power And sound so much power
Reviewed in the United States on August 4, 2024 by Tony
    • 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

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