💥 Transform your Harley’s breath, power, and roar — don’t just ride, dominate the road!
The K&N Cold Air Intake System RK-3950 is a vehicle-specific upgrade for 2001-2017 Harley Davidson models that enhances engine performance by increasing airflow with a high-flow, reusable 4-layer cotton filter. Dyno-tested for verified horsepower and torque gains, it improves throttle response, towing capability, and engine sound. Easy to install in under 60 minutes, it comes with a lifetime limited warranty and is proudly made in the USA.
| Brand | K&N |
| OEM Part Number | RK-3950 |
| Global Trade Identification Number | 00024844364647 |
| Manufacturer | K&N Engineering |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 024844364647 |
| Model | RK-3950 |
| Item Weight | 4.7 pounds |
| Country of Origin | China |
| Item model number | RK-3950 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | RK-3950 |
D**R
Perfect fitment better throttle response
Looks fantastic! Ordered this to replace a screamin eagle intake. At 5'8" the stock "football" cover really got in the way of my knee with forward controls, the k&n is still a little in the way but not nearly as bad. I immediately noticed a snappier throttle response and the ol butt dyno says it's got a little more power.Fitment on my 09 fxdb was flawless and installation was a breeze. The included instructions even have color photos, took 20-30 minutes to install with absolutely zero issues.
T**M
2008 FXDF Fat Bob
Easy install and looks great on 2008 Fat Bob. Changes sound a bit. Not noticing a difference in performance but bike does backfire less than before. Drag Pipes were already installed and I have yet to tune. At this point, running well and don’t see a need for tune. Overall good purchase, nice look and maybe a bit more power.
Ø**R
Great in every way
Delivery with Express, great job.Look is very suitable for my taste.Must do a Mapping for the Bike now.The only thing is, you need a bypass plug because my 2014 Twin Cam has a Connection.But no problem with the Bypass, 20 Euro.
T**E
Perfect
Husband loved this. Easy to put on. Expensive but worth it.
T**D
Good quality
Fit on my 2011 Harley Softail Blackline, bolted right up with no problems and was an easy upgrade from stock.
M**I
Extra power
Awesome product just like any other K&N product.
J**N
Great buy
This air intake system is great and looks great sucking air. The only thing I don’t like is that about an 1/8” of the air intake manifold is covered up by the backer plate of the air intake mount. Other than that great product.
K**R
easy to install with a little more power
easy to install with a little more power
Trustpilot
3 weeks ago
1 week ago
