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🏍️ Ride louder, faster, and smarter with K&N’s Cold Air Intake System!
The K&N Cold Air Intake System (57-1139) is a precision-engineered, dyno-tested upgrade designed specifically for 2017-2021 Harley Davidson models. It replaces the restrictive OEM air box with a high-flow intake tube and oversized washable cotton filter, delivering a guaranteed boost in horsepower and torque while enhancing throttle response and engine sound. Proudly made in the USA, it installs easily in about 60 minutes and comes backed by a no-hassle lifetime limited warranty without voiding your factory coverage.
| ASIN | B07N8TMQ2Q |
| Best Sellers Rank | #236,273 in Automotive ( See Top 100 in Automotive ) #177 in Automotive Replacement Air Intake Filters |
| Brand Name | K&N |
| Customer Reviews | 4.4 4.4 out of 5 stars (100) |
| Fit Type | Vehicle Specific Fit |
| Global Trade Identification Number | 00024844368973 |
| Included Components | Air Filter^Intake Tube^Gasket^Back Plate^Parts Kit^Literature Packet |
| Item Type Name | Performance Air Intake System |
| Item Weight | 4.2 Pounds |
| Manufacturer | K&N Engineering |
| Manufacturer Part Number | 57-1139 |
| Manufacturer Warranty Description | 1,000,000 Miles/10 Year |
| Model Number | 57-1139 |
| OEM Equivalent Part Number | 57-1139 |
| Product Grade | Performance Part |
| Shape | Oblong |
| UPC | 024844368973 |
| Unit Count | 1.0 Count |
K**Z
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.
J**L
Fits my fat bob 114 2019 perfect
Extremely easy to install looks great. Sounds amazing.
C**.
Rainsock?
Would have been it happier if it came with a rain sock like the other manufacturers.
A**Y
Best intake
I ride a 2019 Harley Davidson heritage softail 114 m8 and this fits perfectly. Love the way it looks and how it preforms.
J**E
Awesome intake!
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!
A**R
Feel the difference
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
R**B
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.
D**N
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
R**T
Le prix était excellent beaucoup moins cher que les autres sites
J**O
Excelente filtro de alto flujo le quedo perfecto a mi motocicleta street bob 2018
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