K&N's Street Metal Series High-Flow Air Intake Systems provide a good looking appearance, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle.
K&N's Street Metal Series High-Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. These air intake systems eliminate the stock OE air cleaner and replace it with a complete high-flow air intake system to increase power. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. The air intake system comes with a K&N Air Filter for high air flow and long service intervals. The K&N air filter is washable, reusable, pre-oiled and ready for installation. To help absorb vibration, a durable mounting gasket is also included. The versatile all-black, durable round aluminum cover and back plate on this air intake can be dressed up for the mean machine, or dressed down for the sleek and sophisticated aesthetic.
- Designed for Harley-Davidson motorcycles
- Increase horsepower and torque
- Easy to install
- Made in USA
- Backed by K&N warranty
Application Summary:
| Year |
Make/Model |
| 2018-2020 |
Harley-Davidson FLDE Deluxe 107 |
| 2018-2019 |
Harley-Davidson FLFB Fat Boy 107 |
| 2018-2023 |
Harley-Davidson FLFBS Fat Boy 114 |
| 2018-2021 |
Harley-Davidson FLHC Heritage Classic 107 |
| 2018-2023 |
Harley-Davidson FLHCS Heritage Classic 114 |
| 2017-2022 |
Harley-Davidson FLHR Road King |
| 2018-2023 |
Harley-Davidson FLHRXS Road King Special |
| 2019-2022 |
Harley-Davidson FLHT Electra Glide Standard |
| 2017-2019 |
Harley-Davidson FLHTCU Electra Glide Ultra Classic |
| 2017-2023 |
Harley-Davidson FLHTCUTG Tri Glide Ultra |
| 2017-2023 |
Harley-Davidson FLHTK Ultra Limited |
| 2017-2019 |
Harley-Davidson FLHTKL Ultra Limited Low |
| 2017-2023 |
Harley-Davidson FLHX Street Glide |
| 2017-2023 |
Harley-Davidson FLHXS Street Glide Special |
| 2017-2023 |
Harley-Davidson FLRT Freewheeler |
| 2018-2021 |
Harley-Davidson FLSB Sport Glide 107 |
| 2018-2021 |
Harley-Davidson FLSL Softail Slim 107 |
| 2020-2023 |
Harley-Davidson FLTRK Road Glide Limited |
| 2023 |
Harley-Davidson FLTRT Road Glide 3 |
| 2017-2019 |
Harley-Davidson FLTRU Road Glide Ultra |
| 2017-2023 |
Harley-Davidson FLTRX Road Glide |
| 2017-2023 |
Harley-Davidson FLTRXS Road Glide Special |
| 2018-2020 |
Harley-Davidson FXBB Street Bob 107 |
| 2021-2023 |
Harley-Davidson FXBBS Street Bob 114 |
| 2018-2019 |
Harley-Davidson FXBR Breakout 107 |
| 2018-2021 |
Harley-Davidson FXBRS Breakout 114 |
| 2018-2019 |
Harley-Davidson FXFB Fat Bob 107 |
| 2018-2023 |
Harley-Davidson FXFBS Fat Bob 114 |
| 2018-2020 |
Harley-Davidson FXLR Low Rider 107 |
| 2020-2021 |
Harley-Davidson FXLRS Low Rider S 114 |
| 2022 |
Harley-Davidson FXLRS Low Rider S 117 |
| 2020-2023 |
Harley-Davidson FXST Softail Standard 107 |
| Attributes |
| Air Filter Color |
Red |
| Air Filter Height |
2.125 in (54 mm) |
| Air Filter Material |
Cotton Gauze |
| Air Filter Washable |
Yes |
| Alternate Part Number |
RK-3954B |
| ASIN |
B071GX75K1 |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| California Restricted |
Not legal for sale or use in California |
| CARB EO Number |
D-269-60/83/104 |
| Color / Finish |
Red Filter, Black Top |
| Country of Origin (Primary) |
US |
| Emission Code |
Legal US |
| Estimated Horsepower Gain |
7.17 HP @ 4812 RPM |
| Harmonized Tariff Code (Schedule B) |
8421310000 |
| Hazardous Material Code |
N |
| Horse Power Increase |
7 HP |
| Life Cycle Status Code |
Available Only While Supplies Last |
| Mounting Hardware Included |
Yes |
| NAFTA Preference Criterion Code |
B |
| Overall Height |
2.281 in (58 mm) |
| Package Material |
Corrugated |
| Package Type |
Box |
| Product Box Height |
4.88 in (124 mm) |
| Product Box Length |
11.75 in (298 mm) |
| Product Box Width |
9.5 in (241 mm) |
| Product Style |
Motorcycle Intake System |
| Replacement Filter |
E-3990 |
| RPM |
4812 |
| SDR Required Flag |
N |
| Street Legal In All US States |
No, Not legal for sale or use in California on any pollution controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status on your parts at knfilters.com. |
| Top Material |
Aluminum |
| TUV Approved (Europe) |
No, No |
| Warranty |
No-Hassle Lifetime Limited |
| Warranty Time |
3 |
| Weight |
3.8 lb (1.7 kg) |
| GTIN |
00024844365293 |
