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2017-2022 Harley Davidson FLHR Road King Base Intake System

$349.99

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Description

K&N’s RK Series Street Metal high flow air intake systems offer increased airflow and deliver more horsepower & torque to your Harley-Davidson® motorcycle. These intake systems increase power by eliminating the stock OE air cleaner and replacing it with a complete high flow air intake system. The sturdy, custom aluminum backing plate mounts directly to the throttle body and has a built in breather system to direct pressure from the breather bolts into the throttle body opening and not out into the air filter. Street Metal air intake systems include a high flow air filter which provids low restriction airflow and long air filter service intervals. K&N Street Metal series high flow air intake systems are equipped with custom designed aluminum covers to make sure your air cleaner looks good while powering down the highway or at your local show. * Guaranteed Increase in Horsepower * Aggressive appearance while providing outstanding airflow * Completely replaces stock air cleaner assembly * Washable, oversized K&N high flow air filter * Provides excellent filtration and long service intervals * Aluminum backing plate with integrated velocity stack * Built-in breathers replace external OE breathers** * High quality mirror finish aluminum cover * K&N Drycharger® available for use in extremely dusty conditions * Includes K&N Million Mile Limited Warranty®

PRODUCT DETAILS

Part Number:
knnRK-3948B
Description:
Harley Davidson Intake System
Air Filter Color:
Red
Air Filter Height:
2.188 in (56 mm)
Air Filter Material:
Cotton Gauze
California Restricted:
Not legal for sale or use in California
Color / Finish:
Red Filter, Black Top
Estimated Horsepower Gain:
6.84 HP @ 4812 RPM
Horse Power Increase:
7 HP
Mounting Hardware Included:
Yes
Overall Height:
2.281 in (58 mm)
Product Style:
Motorcycle Intake System
Replacement Filter:
RK-3940
RPM:
4812
Title:
K&N RK-3948B Intake System-Harley Davidson
Top Material:
Aluminum
Weight:
5.4 lb (2.5 kg)
Product Box Height:
4.88 in (124 mm)
Product Box Length:
11.75 in (298 mm)
Product Box Width:
9.5 in (241 mm)
Street Legal In All US States:
No
TUV Approved (Europe):
No
Air Filter Washable:
Yes
CARB EO Number:
D-269-60
Package Material:
Corrugated
Package Type:
Box
Warranty:
1,000,000 Miles/10 Year
Prop 65 (C, R or CR):
CR
Prop 65 – Short Label:
WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov
Prop 65 Warning Label:
https://www.knfilters.com/images/l/prop65.jpg
Prop 65 Yes/No:
Yes

VEHICLE FITMENT

  • 2018-2020 Harley Davidson FLDE Deluxe 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2019 Harley Davidson FLFB Fat Boy 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2022 Harley Davidson FLFBS Fat Boy 114 Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018-2021 Harley Davidson FLHC Heritage Classic 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2022 Harley Davidson FLHCS Heritage Classic 114 Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2022 Harley Davidson FLHR Road King Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018 Harley Davidson FLHRXS Road King Special Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-83; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLHRXS Road King Special Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018 Harley Davidson FLHT Electra Glide Standard Base –.1690cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLHT Electra Glide Standard Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2019 Harley Davidson FLHTCU Electra Glide Ultra Classic Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLHTCUTG Tri Glide Ultra Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLHTCUTG Tri Glide Ultra Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLHTK Ultra Limited Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLHTK Ultra Limited Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLHTKL Ultra Limited Low Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
  • 2019 Harley Davidson FLHTKL Ultra Limited Low Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2017-2022 Harley Davidson FLHX Street Glide Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLHXS Street Glide Special Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLHXS Street Glide Special Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLRT Freewheeler Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLRT Freewheeler Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018-2021 Harley Davidson FLSB Sport Glide 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2021 Harley Davidson FLSL Softail Slim 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2020-2022 Harley Davidson FLTRK Road Glide Limited Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLTRU Road Glide Ultra Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
  • 2019 Harley Davidson FLTRU Road Glide Ultra Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2017-2022 Harley Davidson FLTRX Road Glide Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2017-2018 Harley Davidson FLTRXS Road Glide Special Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2017: California Air Resources Board Exempt: Yes; CARB EO: D-269-60; Motorcycle Intake System - Big 8 - Black
2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2019-2022 Harley Davidson FLTRXS Road Glide Special Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018-2020 Harley Davidson FXBB Street Bob 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2021-2022 Harley Davidson FXBBS Street Bob 114 Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2021: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018-2019 Harley Davidson FXBR Breakout 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2020 Harley Davidson FXBRS Breakout 114 Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2019 Harley Davidson FXFB Fat Bob 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2018-2022 Harley Davidson FXFBS Fat Bob 114 Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2018-2020 Harley Davidson FXLR Low Rider 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2018: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2019: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2020-2021 Harley Davidson FXLRS Low Rider S 114 Base –.1868cc Air Intake Systems::Cold Air Intakes 
    2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
  • 2022 Harley Davidson FXLRS Low Rider S 117 Base –.1923cc Air Intake Systems::Cold Air Intakes 
    2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black
  • 2020-2022 Harley Davidson FXST Softail Standard 107 Base –.1746cc Air Intake Systems::Cold Air Intakes 
    2020: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2021: California Air Resources Board Exempt: Yes; CARB EO: D-269-104; Motorcycle Intake System - Big 8 - Black
2022: California Air Resources Board Exempt: No; Motorcycle Intake System - Big 8 - Black

Additional information

Weight 5.4 lbs

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