🏍️ Feel the Power, Hear the Roar, Own the Road
The K&N Cold Air Intake System RK-3952 is a vehicle-specific upgrade for 2008-2017 Harley Davidson models, designed to increase horsepower and torque by optimizing airflow with a high-flow, reusable 4-layer cotton filter. Dyno-tested for performance, it enhances engine sound and throttle response, improving towing and daily driving. Proudly made in the USA, it includes a lifetime limited warranty and installs easily in under 60 minutes.
| Brand | K&N |
| Product Dimensions | 12"L x 9.5"W x 3.75"H |
| OEM Part Number | 77-2557KP |
| Global Trade Identification Number | 02484436701300, 00024844367013 |
| Shape | Oval |
| Manufacturer | K&N Engineering |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 024844367013 |
| Model | Intake System |
| Item Weight | 3.88 pounds |
| Country of Origin | China |
| Item model number | RK-3952 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | RK-3952 |
D**G
Happy with the look and performance
I had this installed on my 2013 Ultra Limited along with true dual exhaust and a tuner. I can hear my bike breathe now. I’d recommend this KN air intake.
P**S
Great breather for my Harley Roadglide
Ive tried a few different breathers on my 2015 Harley Road glide and when this was on sale i had to try it. Install was straight forward with clear included instructions. Parts are quality made and thought went into engineering this to fit perfect. Fit touring Harleys really well. This is my favorite to date. Included pictures. Kit comes with a K&N decal and a emission decal/ tag if needed for your state Inspection. Highly recommended.
J**R
Looks good
Nice air filter spendy
B**N
Inexpensive
Yes, easy to install, looks fabulous. Great value for the price.. But,,,,, you will have "splash" on pipes, front of bags and, side covers. Bought in October 2020. Changing out to a new type K&N (63_1134). Will see if this one helps on fuel economy. When filled, 231 till empty, refueling at 150. Yes, I do get on the throttle stage 4 with Reinhardt headers.
J**T
Amazing performance!!
Spend the money.. you need this if you have a stocker… let it breath :)
C**R
K & N products never let me down
perfect fit, looks and performs great!!
L**T
K and N filter assembly
Was reluctant to change screaming eagle assembly but this filter met all expectations. I put bike on dyno and I gained 8.5 horsepower. That's a phenomenal gain! Very impressed!
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