K&N
K&N RK-3955 Motorcycle Air Intake System for Select 2017-2025 Harley-Davidson Models
K&N RK-3955 Motorcycle Air Intake System for Select 2017-2025 Harley-Davidson Models
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K&N RK-3955 Motorcycle Air Intake System.
K&N Street Metal Air Intake Systems for Harley Davidson Dyna, Softail, Touring and Twin-Cam Model motorcycles increase power by eliminating the restrictive stock OE air cleaner and replacing it with an oversized K&N High-Flow Air Filter™ and a cast aluminum high-volume aluminum housing. K&N high-flow intake systems give your Harley® an aggressive appearance while providing a significant increase in airflow resulting in more power.
Key Features
- Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection.
Fits These Vehicles
Fits 1 make, 2017-2025 — click to view all 41 models
- Fits 2022-2025 Harley-Davidson FXLRST Low Rider ST 117 117 CI
- Fits 2018-2023 Harley-Davidson FLFBS Fat Boy 114 114 CI
- Fits 2018-2023 Harley-Davidson FLHCS Heritage Classic 114 114 CI
- Fits 2019-2023 Harley-Davidson FLHRXS Road King Special 114 CI
- Fits 2018 Harley-Davidson FLHRXS Road King Special 107 CI
- Fits 2020-2023 Harley-Davidson FLHTCUTG Tri Glide Ultra 114 CI
- Fits 2017-2019 Harley-Davidson FLHTCUTG Tri Glide Ultra 107 CI
- Fits 2019-2023 Harley-Davidson FLHTK Ultra Limited 114 CI
- Fits 2017-2018 Harley-Davidson FLHTK Ultra Limited 107 CI
- Fits 2017-2023 Harley-Davidson FLHX Street Glide 107 CI
- Fits 2019-2023 Harley-Davidson FLHXS Street Glide Special 114 CI
- Fits 2017-2018 Harley-Davidson FLHXS Street Glide Special 107 CI
- Fits 2020-2023 Harley-Davidson FLRT Freewheeler 114 CI
- Fits 2017-2019 Harley-Davidson FLRT Freewheeler 107 CI
- Fits 2020-2023 Harley-Davidson FLTRK Road Glide Limited 114 CI
- Fits 2023 Harley-Davidson FLTRT Road Glide 3 114 CI
- Fits 2017-2023 Harley-Davidson FLTRX Road Glide 107 CI
- Fits 2019-2023 Harley-Davidson FLTRXS Road Glide Special 114 CI
- Fits 2017-2018 Harley-Davidson FLTRXS Road Glide Special 107 CI
- Fits 2021-2023 Harley-Davidson FXBBS Street Bob 114 114 CI
- Fits 2018-2023 Harley-Davidson FXFBS Fat Bob 114 114 CI
- Fits 2020-2023 Harley-Davidson FXST Softail Standard 107 107 CI
- Fits 2017-2022 Harley-Davidson FLHR Road King 107 CI
- Fits 2018-2022 Harley-Davidson FLHT Electra Glide Standard 107 CI
- Fits 2018-2022 Harley-Davidson FLSB Sport Glide 107 CI
- Fits 2022 Harley-Davidson FXLRS Low Rider S 117 117 CI
- Fits 2018-2021 Harley-Davidson FLHC Heritage Classic 107 CI
- Fits 2018-2021 Harley-Davidson FLSL Softail Slim 107 CI
- Fits 2018-2021 Harley-Davidson FXBRS Breakout 114 114 CI
- Fits 2020-2021 Harley-Davidson FXLRS Low Rider S 114 114 CI
- Fits 2018-2020 Harley-Davidson FLDE Deluxe 107 CI
- Fits 2018-2020 Harley-Davidson FXBB Street Bob 107 CI
- Fits 2018-2020 Harley-Davidson FXLR Low Rider 107 CI
- Fits 2018-2019 Harley-Davidson FLFB Fat Boy 107 CI
- Fits 2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic 107 CI
- Fits 2019 Harley-Davidson FLHTKL Ultra Limited Low 114 CI
- Fits 2017-2018 Harley-Davidson FLHTKL Ultra Limited Low 107 CI
- Fits 2019 Harley-Davidson FLTRU Road Glide Ultra 114 CI
- Fits 2017-2018 Harley-Davidson FLTRU Road Glide Ultra 107 CI
- Fits 2018-2019 Harley-Davidson FXBR Breakout 107 107 CI
- Fits 2018-2019 Harley-Davidson FXFB Fat Bob 107 CI
Confirm the model year, engine and the part number against your vehicle before ordering.
K&N warrants this product to be free from defects in materials and workmanship for the lifetime of the product. Coverage applies only to the original purchaser and is non-transferable. Coverage excludes damage from transportation, storage, improper use, failure to follow the product instructions or perform preventive maintenance, modifications, unauthorized repair, normal wear and tear, racing, competition or off-road use. Claims are handled directly by K&N customer service.
Specifications
- Brand: K&N
- Manufacturer Part Number: RK-3955
- Type: Cold Air Intake
- CARB E.O. Number: D-269-60
- Street Legal: Legal for use in all 50 states
- Manufacturer Warranty: Lifetime Limited (original purchaser)
- Condition: New
Images are for illustrative purposes. The product you receive may differ in finish or packaging from the photograph.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Manufacturer's Warranty — K&N
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Manufacturer's Warranty — K&N
K&N warrants its products against defects in materials and workmanship. Washable replacement air filters, washable cabin air filters, performance air intake systems and home HVAC filters carry a lifetime limited warranty; oil filters, disposable and universal air filters and automotive accessories are covered for one year from the date of purchase. Coverage applies to the original purchaser and excludes damage from improper use, failure to perform maintenance, modification, normal wear, racing, competition or off-road use. Claims are handled directly by K&N customer service.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by K&N. Contact us if you need help with a warranty claim.

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