Alter Ego Motorcycle Supply — Serving Riders Since 1973

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    K&N Street Metal Intake Hammer Black Finish — RK-3954B

    K&N Street Metal Intake Hammer Black Finish — RK-3954B

    $384.99

    Check vehicle fitment →

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    Street Metal Intake Hammer Black Finish.

    In stock

    SKU: WP7933954B
    Category:
    Brands:

    Description

    Street Metal Intake Hammer Black Finish

    • Developed around an oversized K&N High-Flow Air Filter™ that is designed to boost performance, filtration and service intervals
    • Aluminum backing plate with integrated velocity stack provides solid mounting surface
    • Built-in breathers replace external OE breathers
    • High quality mirror-finish or wrinkle black aluminum cover

    Vehicle fitment

    • Harley Davidson FLDE Softail Deluxe — 2018, 2019, 2020
    • Harley Davidson FLFB Softail Fat Boy — 2018, 2019
    • Harley Davidson FLFBS Softail Fat Boy 114 — 2018, 2019, 2020, 2021
    • Harley Davidson FLH Electra Glide — 2021
    • Harley Davidson FLHC Softail Heritage Classic — 2018, 2019, 2020
    • Harley Davidson FLHCS Softail Heritage Classic 114 — 2018, 2019, 2020, 2021
    • Harley Davidson FLHR Road King — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHRXS Road King Special — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHT Electra Glide — 2019, 2020, 2022
    • Harley Davidson FLHTCU Electra Glide Ultra Classic — 2017, 2018, 2019
    • Harley Davidson FLHTCUTG Tri Glide Ultra Classic — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHTK Electra Glide Ultra Limited — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHTKL Electra Glide Ultra Limited Low — 2017, 2018, 2019
    • Harley Davidson FLHTKSE CVO Limited — 2017, 2018, 2019
    • Harley Davidson FLHX Street Glide — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHXS Street Glide Special — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHXSE CVO Street Glide — 2017, 2018, 2019
    • Harley Davidson FLRT Freewheeler — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLSB Softail Sport Glide — 2018, 2019, 2020, 2021
    • Harley Davidson FLSL Softail Slim — 2018, 2019, 2020, 2021
    • Harley Davidson FLTR Road Glide — 2017, 2018, 2019
    • Harley Davidson FLTRK Road Glide Limited — 2020, 2021, 2022
    • Harley Davidson FLTRU Road Glide Ultra — 2017, 2018, 2019
    • Harley Davidson FLTRX Road Glide Custom — 2020
    • Harley Davidson FLTRXS Road Glide Special — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLTRXSE CVO Road Glide — 2018, 2019
    • Harley Davidson FXBB Softail Street Bob — 2018, 2019, 2020, 2021
    • Harley Davidson FXBBS Softail Street Bob 114 — 2022
    • Harley Davidson FXBR Softail Breakout — 2018, 2019
    • Harley Davidson FXBRS Softail Breakout 114 — 2018, 2019, 2020
    • Harley Davidson FXDR Softail Power Cruiser — 2019
    • Harley Davidson FXFB Softail Fat Bob — 2018, 2019
    • Harley Davidson FXFBS Softail Fat Bob 114 — 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FXLR Softail Low Rider — 2018, 2019
    • Harley Davidson FXLRS Softail Low Rider S — 2020, 2021, 2022
    • Harley Davidson FXST Softail — 2022

    Manufacturer part RK-3954B
    WPS part 7933954B

    Vehicle fitment

    WPS lists this part for the following vehicles. Match your exact model and year.

    Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.

    Compatible vehicle years, makes and models
    YearsMakeModel
    2018–2020Harley DavidsonFLDE Softail Deluxe
    2018–2019Harley DavidsonFLFB Softail Fat Boy
    2018–2021Harley DavidsonFLFBS Softail Fat Boy 114
    2021Harley DavidsonFLH Electra Glide
    2018–2020Harley DavidsonFLHC Softail Heritage Classic
    2018–2021Harley DavidsonFLHCS Softail Heritage Classic 114
    2017–2022Harley DavidsonFLHR Road King
    2017–2022Harley DavidsonFLHRXS Road King Special
    2019–2020, 2022Harley DavidsonFLHT Electra Glide
    2017–2019Harley DavidsonFLHTCU Electra Glide Ultra Classic
    2017–2022Harley DavidsonFLHTCUTG Tri Glide Ultra Classic
    2017–2022Harley DavidsonFLHTK Electra Glide Ultra Limited
    2017–2019Harley DavidsonFLHTKL Electra Glide Ultra Limited Low
    2017–2019Harley DavidsonFLHTKSE CVO Limited
    2017–2022Harley DavidsonFLHX Street Glide
    2017–2022Harley DavidsonFLHXS Street Glide Special
    2017–2019Harley DavidsonFLHXSE CVO Street Glide
    2017–2022Harley DavidsonFLRT Freewheeler
    2018–2021Harley DavidsonFLSB Softail Sport Glide
    2018–2021Harley DavidsonFLSL Softail Slim
    2017–2019Harley DavidsonFLTR Road Glide
    2020–2022Harley DavidsonFLTRK Road Glide Limited
    2017–2019Harley DavidsonFLTRU Road Glide Ultra
    2020Harley DavidsonFLTRX Road Glide Custom
    2017–2022Harley DavidsonFLTRXS Road Glide Special
    2018–2019Harley DavidsonFLTRXSE CVO Road Glide
    2018–2021Harley DavidsonFXBB Softail Street Bob
    2022Harley DavidsonFXBBS Softail Street Bob 114
    2018–2019Harley DavidsonFXBR Softail Breakout
    2018–2020Harley DavidsonFXBRS Softail Breakout 114
    2019Harley DavidsonFXDR Softail Power Cruiser
    2018–2019Harley DavidsonFXFB Softail Fat Bob
    2018–2022Harley DavidsonFXFBS Softail Fat Bob 114
    2018–2019Harley DavidsonFXLR Softail Low Rider
    2020–2022Harley DavidsonFXLRS Softail Low Rider S
    2022Harley DavidsonFXST Softail

    Source: WPS vehicle-fitment data · WPS part 7933954B · Checked November 14, 2026.

    Additional information

    Weight 3.8 lbs
    Dimensions 11.75 × 9.5 × 4.88 in

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    Complete the job

    Parts & supplies

    • Air-filter care

      Use cleaning/oiling products only for filter materials that permit them. Replace disposable paper filters.

    • Intake gaskets & seals

      Match the intake assembly and check what the filter kit includes.

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