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🏍️ k&n cold air intake kit: boost horsepower with high performance: 50-state legal: designed for 2017-2018 harley davidson (road king, ultra limited, street glide, special, freewheeler)57-1139 logo

🏍️ K&N Cold Air Intake Kit: Boost Horsepower with High Performance: 50-State Legal: Designed for 2017-2018 HARLEY DAVIDSON (Road King, Ultra Limited, Street Glide, Special, Freewheeler)57-1139 Review

8

Β·

Very good

Revainrating 4.5 out of 5Β Β 
RatingΒ 
4.4
πŸ” Car Filters, πŸ› οΈ Replacement Parts

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Details

Product GradePerformance Part
BrandK&N
Fit TypeVehicle Specific Fit
Item Dimensions LxWxH11.75 x 4.88 x 9.5 inches

Description of 🏍️ K&N Cold Air Intake Kit: Boost Horsepower with High Performance: 50-State Legal: Designed for 2017-2018 HARLEY DAVIDSON (Road King, Ultra Limited, Street Glide, Special, Freewheeler)57-1139

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.

Reviews

Global ratings 8
  • 5
    6
  • 4
    1
  • 3
    0
  • 2
    0
  • 1
    1

Type of review

Revainrating 5 out of 5

For 2019 HD Softail Heritage

For 2019 107 Softail Heritage Classic. No problem. I did not remove the OEM induction module support bracket. I used it instead of KN washers.

Pros
  • Free for Education
Cons
  • Faulty

Revainrating 4 out of 5

Perfect match for my 2020 street bob fxbb

Came with a scratch but fits perfectly easy to fit no need for the 2 big fat washers it comes with but extra performance I'm feeling good and look good

Pros
  • Handy item
Cons
  • Miscellaneous Miscellaneous

Revainrating 1 out of 5

Bolt replacement or refund required

Two bolts holding air cleaner tube broke off after first ride after installation. The other two were free. Do you need four new studs or can they be returned for a full refund?

Pros
  • Certified
Cons
  • Volume

Revainrating 5 out of 5

You won't regret spending $$$. Worth every penny.

Professionally packaged. Installation 20 minutes. Came with Loctite. Very happy with this deal. 2018 Street Slip Special Offer. Brilliant! Definitely feel the difference when your engine can breathe and trust me this filter lets it breathe bro.

Pros
  • An absolute legend
Cons
  • Large and bulky

Revainrating 5 out of 5

Great reception! fits spares

Love this intake! It's very easy to install and works great. This is the second one I've bought. I have one on a 2013 Blackline with a 103ci engine and one on a 2019 Softail Slim with a 107ci Milwaukee 8 engine. They are heavy and I highly recommend them!

Pros
  • Decent performance
Cons
  • Not as thick as other options

Revainrating 5 out of 5

Improved performance

I am very happy with my purchase, performance has improved over my previous air system which was already an OCM filter upgrade. Installation was easy and delivery was very quick. I also have FP3 haters Vance, Hyndes and Cobra Neighbors. A fantastic combination and the look is fantastic and aggressive.

Pros
  • Great price
Cons
  • Long delivery time

Revainrating 5 out of 5

Huge improvement in throttle response

After installation, which was very easy with basic tools, I took it out and immediately noticed a difference. Actually, you could hear the breakthrough breathing much better and gulping down the air. I haven't mapped the bike yet, but I can only imagine how much more power it will be capable of when it all comes together. Buy this air filter. Looks just as great. Lots of comments and questions about road traffic from young and old

Pros
  • High marks for support and durability from testers
Cons
  • poorly thought out

Revainrating 5 out of 5

Looks good, lives up to expectations

K&N quality as always! Great air purifier at a great price. Installation was difficult due to the large o-ring as I didn't have any lube. I've used this with an FP3 fuel tuner and some V&H overlays and got much better throttle response and tone. My only complaint is that it pushes my right foot off the bike and my knee touches the intake pipe. This can cause fatigue on long rides and hopefully doesn't wear out the air intake.

Pros
  • Elegant design
Cons
  • Hard to say