🏍️ Elevate your Harley’s heartbeat — power, sound, and style in one breath!
The K&N Cold Air Intake System RK-3955 is a vehicle-specific upgrade for 2017-2023 Harley Davidson models, designed to boost horsepower and torque by increasing cool, oxygen-rich airflow. Featuring a high-flow, reusable 4-layer cotton air filter, it improves engine sound and throttle response, especially under towing conditions. Easy to install in under an hour, it comes with a lifetime limited warranty and maintains your manufacturer’s warranty, all proudly supported by US-based customer service.
| Brand | K&N |
| OEM Part Number | RK-3955 |
| Global Trade Identification Number | 00024844364500 |
| Manufacturer | K&N Engineering |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 024844364500 |
| Model | RK-3955 |
| Item Weight | 4.7 pounds |
| Country of Origin | China |
| Item model number | RK-3955 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | RK-3955 |
E**.
2019 roadking
Worked great for my 2019 roadking
A**N
Brought the bike to life!
Really opened up the bikes intake. She breathes much better. So much so that I had to have it dyno tuned because I was dumping fuel out of the intake breathers. So much better than stock!
D**7
Pretty nice air cleaner
It looks good it's nice installation was not 100% correct didn't have to use the spacers also there we're blemishes on the top of the filter case which I'm not too happy about considering this was $250 other than that seems pretty good so far
T**.
Not only a great looking air cleaner, it performs!!
Liked the air scoop / blower design of the cover. I have recieved many compliments on how great it looks! and I try not to buy int the "added" HP features many manufacturers promote, but I do believe I see increased performance by the "velocity stack" built in to the mount.
B**E
Awesome Addition
Awesome addition to complement my 2:1 D&D exhaust. Easy to install as well. I chose this set up because it will protect my filter from rain better than the other ones.
M**A
Beautiful
The K&N filter fit perfect on 2020 street glide I did not need the two thick washerIt took longer to remove my factory breather then installing my K&N breather
B**.
Form & function!
A nice "adornment" to my bike...but more importantly, better breathability!
R**R
Like the look
Like it allot. However large throttle body o-ring was to large in circumference, and would not fit/stay in o-ring groove. Had to modify and reglue correct size. As i already had stock filter system removed and did not want to reassemble only to remove again to replace when a new/correct o-ring could be aquired
Trustpilot
5 days ago
1 month ago
