The K&N Engineering 57-1139 performance air intake system is designed for select 2017 Harley-Davidson Touring motorcycle models. It replaces the restrictive stock OE air cleaner with a K&N high-flow air filter and cast aluminum intake tube to increase airflow and support improved engine performance.
The system includes a die-cast aluminum throttle-body mounting plate and mounting hardware. Its performance-focused design also gives compatible Harley-Davidson motorcycles an aggressive appearance while replacing the factory air cleaner assembly.
The washable and reusable high-flow air filter can go up to 100,000 miles before cleaning under normal highway driving conditions. The intake system is EPA compliant, CARB exempt under Executive Order D-269-60, and covered by the K&N Million Mile Limited Warranty.
Fitment includes the 2017 Harley-Davidson FLRT Freewheeler, FLHTCUTG Tri Glide Ultra, FLHR Road King, FLHX Street Glide, FLTRX Road Glide, FLHXS Street Glide Special, FLTRXS Road Glide Special, FLTRU Road Glide Ultra, FLHTK Ultra Limited, and FLHTKL Ultra Limited Low.
Features:
- High-Flow Air Filter: Replaces the restrictive stock OE air cleaner to increase airflow.
- Washable and Reusable: Filter can go up to 100,000 miles before cleaning under normal highway driving conditions.
- Cast Aluminum Intake Tube: Provides a durable intake component for the performance air intake system.
- Throttle-Body Mounting Plate: Includes a die-cast aluminum mounting plate and mounting hardware.
- Performance Appearance: Gives compatible Harley-Davidson motorcycles an aggressive appearance.
- Regulatory Compliance: EPA compliant and CARB exempt under Executive Order D-269-60.
- Warranty: Covered by the K&N Million Mile Limited Warranty.
- Application: Fits select 2017 Harley-Davidson Touring motorcycle models listed in the product data.
Fitment:
2017 Harley Davidson FLHR Road King Base
2017 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
2017 Harley Davidson FLHTCUTG Tri Glide Ultra Base
2017 Harley Davidson FLHTK Ultra Limited Base
2017 Harley Davidson FLHTKL Ultra Limited Low Base
2017 Harley Davidson FLHX Street Glide Base
2017 Harley Davidson FLHXS Street Glide Special Base
2017 Harley Davidson FLRT Freewheeler Base
2017 Harley Davidson FLTRU Road Glide Ultra Base
2017 Harley Davidson FLTRX Road Glide Base
2017 Harley Davidson FLTRXS Road Glide Special Base
2018 Harley Davidson FLDE Deluxe 107 Base
2018 Harley Davidson FLFB Fat Boy 107 Base
2018 Harley Davidson FLFBS Fat Boy 114 Base
2018 Harley Davidson FLHC Heritage Classic 107 Base
2018 Harley Davidson FLHCS Heritage Classic 114 Base
2018 Harley Davidson FLHR Road King Base
2018 Harley Davidson FLHRXS Road King Special Base
2018 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
2018 Harley Davidson FLHTCUTG Tri Glide Ultra Base
2018 Harley Davidson FLHTK Ultra Limited Base
2018 Harley Davidson FLHTKL Ultra Limited Low Base
2018 Harley Davidson FLHX Street Glide Base
2018 Harley Davidson FLHXS Street Glide Special Base
2018 Harley Davidson FLRT Freewheeler Base
2018 Harley Davidson FLSB Sport Glide 107 Base
2018 Harley Davidson FLSL Softail Slim 107 Base
2018 Harley Davidson FLTRU Road Glide Ultra Base
2018 Harley Davidson FLTRX Road Glide Base
2018 Harley Davidson FLTRXS Road Glide Special Base
2018 Harley Davidson FXBB Street Bob 107 Base
2018 Harley Davidson FXBR Breakout 107 Base
2018 Harley Davidson FXBRS Breakout 114 Base
2018 Harley Davidson FXFB Fat Bob 107 Base
2018 Harley Davidson FXFBS Fat Bob 114 Base
2018 Harley Davidson FXLR Low Rider 107 Base
2019 Harley Davidson FLDE Deluxe 107 Base
2019 Harley Davidson FLFB Fat Boy 107 Base
2019 Harley Davidson FLFBS Fat Boy 114 Base
2019 Harley Davidson FLHC Heritage Classic 107 Base
2019 Harley Davidson FLHCS Heritage Classic 114 Base
2019 Harley Davidson FLHR Road King Base
2019 Harley Davidson FLHRXS Road King Special Base
2019 Harley Davidson FLHT Electra Glide Standard Base
2019 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
2019 Harley Davidson FLHTCUTG Tri Glide Ultra Base
2019 Harley Davidson FLHTK Ultra Limited Base
2019 Harley Davidson FLHTKL Ultra Limited Low Base
2019 Harley Davidson FLHX Street Glide Base
2019 Harley Davidson FLHXS Street Glide Special Base
2019 Harley Davidson FLRT Freewheeler Base
2019 Harley Davidson FLSB Sport Glide 107 Base
2019 Harley Davidson FLSL Softail Slim 107 Base
2019 Harley Davidson FLTRU Road Glide Ultra Base
2019 Harley Davidson FLTRX Road Glide Base
2019 Harley Davidson FLTRXS Road Glide Special Base
2019 Harley Davidson FXBB Street Bob 107 Base
2019 Harley Davidson FXBR Breakout 107 Base
2019 Harley Davidson FXBRS Breakout 114 Base
2019 Harley Davidson FXFB Fat Bob 107 Base
2019 Harley Davidson FXFBS Fat Bob 114 Base
2019 Harley Davidson FXLR Low Rider 107 Base
2020 Harley Davidson FLDE Deluxe 107 Base
2020 Harley Davidson FLFBS Fat Boy 114 Base
2020 Harley Davidson FLHC Heritage Classic 107 Base
2020 Harley Davidson FLHCS Heritage Classic 114 Base
2020 Harley Davidson FLHR Road King Base
2020 Harley Davidson FLHRXS Road King Special Base
2020 Harley Davidson FLHT Electra Glide Standard Base
2020 Harley Davidson FLHTCUTG Tri Glide Ultra Base
2020 Harley Davidson FLHTK Ultra Limited Base
2020 Harley Davidson FLHX Street Glide Base
2020 Harley Davidson FLHXS Street Glide Special Base
2020 Harley Davidson FLRT Freewheeler Base
2020 Harley Davidson FLSB Sport Glide 107 Base
2020 Harley Davidson FLSL Softail Slim 107 Base
2020 Harley Davidson FLTRK Road Glide Limited Base
2020 Harley Davidson FLTRX Road Glide Base
2020 Harley Davidson FLTRXS Road Glide Special Base
2020 Harley Davidson FXBB Street Bob 107 Base
2020 Harley Davidson FXBRS Breakout 114 Base
2020 Harley Davidson FXFBS Fat Bob 114 Base
2020 Harley Davidson FXLR Low Rider 107 Base
2020 Harley Davidson FXLRS Low Rider S 114 Base
2020 Harley Davidson FXST Softail Standard 107 Base
2021 Harley Davidson FLHC Heritage Classic 107 Base
2021 Harley Davidson FLHCS Heritage Classic 114 Base
2021 Harley Davidson FLHR Road King Base
2021 Harley Davidson FLHRXS Road King Special Base
2021 Harley Davidson FLHT Electra Glide Standard Base
2021 Harley Davidson FLHTCUTG Tri Glide Ultra Base
2021 Harley Davidson FLHTK Ultra Limited Base
2021 Harley Davidson FLHX Street Glide Base
2021 Harley Davidson FLHXS Street Glide Special Base
2021 Harley Davidson FLRT Freewheeler Base
2021 Harley Davidson FLSB Sport Glide 107 Base
2021 Harley Davidson FLSL Softail Slim 107 Base
2021 Harley Davidson FLTRK Road Glide Limited Base
2021 Harley Davidson FLTRX Road Glide Base
2021 Harley Davidson FLTRXS Road Glide Special Base
2021 Harley Davidson FXFBS Fat Bob 114 Base
2021 Harley Davidson FXLRS Low Rider S 114 Base
2021 Harley Davidson FXST Softail Standard 107 Base
