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    HardDrive Big Bore Cylinder M8 124 Black W/Machined Fins Pr — 88186

    HardDrive Big Bore Cylinder M8 124 Black W/Machined Fins Pr — 88186

    $650.95

    Check vehicle fitment →

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    Big Bore Cylinder M8 124 Black W/Machined Fins Pr.

    In stock

    SKU: WP820-51548
    Category:
    Brands:

    Description

    Big Bore Cylinder M8 124 Black W/Machined Fins Pr.

    • Cylinders Come Powder Coated Black with Machined Fins For that OEM Look
    • M8 Cylinders for Wiseco Pistons (K2787 sold separately )
    • M8 Big Bore Cylinders Sold as Pair
    • Gaskets Purchased Separately
    • No modifications needed when running Cometic Head and Base gasket kit (see P/Ns below)

    Vehicle fitment

    • Harley Davidson FLDE Softail Deluxe — 2018, 2019, 2020
    • Harley Davidson FLFB Softail Fat Boy — 2018, 2019, 2020
    • Harley Davidson FLFBS Softail Fat Boy 114 — 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLH Electra Glide — 2021
    • Harley Davidson FLHC Softail Heritage Classic — 2018, 2019, 2020, 2021, 2025
    • Harley Davidson FLHCS Softail Heritage Classic 114 — 2018, 2019, 2020, 2021, 2022, 2023, 2024
    • Harley Davidson FLHFB Electra Glide Highway King — 2023
    • Harley Davidson FLHR Road King — 2017, 2018, 2019, 2020, 2021, 2022
    • Harley Davidson FLHRC Road King Classic — 2017
    • Harley Davidson FLHRXS Road King Special — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLHT Electra Glide — 2019, 2020, 2021, 2022
    • Harley Davidson FLHTCU Electra Glide Ultra Classic — 2017, 2018, 2019
    • Harley Davidson FLHTCUTG Tri Glide Ultra Classic — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLHTCUTGSE CVO Tri Glide — 2020, 2021, 2022
    • Harley Davidson FLHTK Electra Glide Ultra Limited — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
    • Harley Davidson FLHTKL Electra Glide Ultra Limited Low — 2017, 2018, 2019
    • Harley Davidson FLHTKSE CVO Limited — 2017, 2018, 2019, 2020, 2021
    • Harley Davidson FLHX Street Glide — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLHXS Street Glide Special — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLHXSE CVO Street Glide — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
    • Harley Davidson FLHXST Street Glide ST — 2022, 2023
    • Harley Davidson FLHXU Street Glide Ultra — 2025
    • Harley Davidson FLRT Freewheeler — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • 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, 2020, 2023, 2025
    • Harley Davidson FLTRK Road Glide Limited — 2020, 2021, 2022, 2023, 2024
    • Harley Davidson FLTRKSE CVO Road Glide Limited — 2022, 2023
    • Harley Davidson FLTRT Trike Road Glide 3 — 2023, 2024, 2025
    • Harley Davidson FLTRU Road Glide Ultra — 2017, 2018, 2019
    • Harley Davidson FLTRX Road Glide Custom — 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLTRXRRSE CVO Road Glide RR — 2025
    • Harley Davidson FLTRXS Road Glide Special — 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLTRXSE CVO Road Glide — 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FLTRXSE CVO Road Glide Custom — 2024, 2025
    • Harley Davidson FLTRXST Road Glide ST — 2022, 2023
    • Harley Davidson FLTRXSTSE CVO Road Glide ST — 2024, 2025
    • Harley Davidson FXBB Softail Street Bob — 2018, 2019, 2020, 2021, 2022, 2025
    • Harley Davidson FXBBS Softail Street Bob 114 — 2022, 2023, 2024
    • Harley Davidson FXBR Softail Breakout — 2018, 2019, 2023, 2024, 2025
    • Harley Davidson FXBRS Softail Breakout 114 — 2018, 2019, 2020
    • Harley Davidson FXDR Softail Power Cruiser — 2019
    • Harley Davidson FXDRS Softail FXDR 114 — 2019, 2020
    • Harley Davidson FXFB Softail Fat Bob — 2018, 2019
    • Harley Davidson FXFBS Softail Fat Bob 114 — 2018, 2019, 2020, 2021, 2022, 2023
    • Harley Davidson FXLR Softail Low Rider — 2018, 2019, 2020, 2021
    • Harley Davidson FXLRS Softail Low Rider S — 2020, 2021, 2022, 2023, 2024, 2025
    • Harley Davidson FXLRST Softail Low Rider ST — 2022, 2023, 2024, 2025
    • Harley Davidson FXST Softail — 2022, 2023, 2024

    Specifications

    HardDrive part 88186
    WPS part 820-51548

    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
    2018–2020Harley DavidsonFLFB Softail Fat Boy
    2018–2025Harley DavidsonFLFBS Softail Fat Boy 114
    2021Harley DavidsonFLH Electra Glide
    2018–2021, 2025Harley DavidsonFLHC Softail Heritage Classic
    2018–2024Harley DavidsonFLHCS Softail Heritage Classic 114
    2023Harley DavidsonFLHFB Electra Glide Highway King
    2017–2022Harley DavidsonFLHR Road King
    2017Harley DavidsonFLHRC Road King Classic
    2017–2025Harley DavidsonFLHRXS Road King Special
    2019–2022Harley DavidsonFLHT Electra Glide
    2017–2019Harley DavidsonFLHTCU Electra Glide Ultra Classic
    2017–2025Harley DavidsonFLHTCUTG Tri Glide Ultra Classic
    2020–2022Harley DavidsonFLHTCUTGSE CVO Tri Glide
    2017–2024Harley DavidsonFLHTK Electra Glide Ultra Limited
    2017–2019Harley DavidsonFLHTKL Electra Glide Ultra Limited Low
    2017–2021Harley DavidsonFLHTKSE CVO Limited
    2017–2025Harley DavidsonFLHX Street Glide
    2017–2025Harley DavidsonFLHXS Street Glide Special
    2017–2024Harley DavidsonFLHXSE CVO Street Glide
    2022–2023Harley DavidsonFLHXST Street Glide ST
    2025Harley DavidsonFLHXU Street Glide Ultra
    2017–2025Harley DavidsonFLRT Freewheeler
    2018–2021Harley DavidsonFLSB Softail Sport Glide
    2018–2021Harley DavidsonFLSL Softail Slim
    2017–2020, 2023, 2025Harley DavidsonFLTR Road Glide
    2020–2024Harley DavidsonFLTRK Road Glide Limited
    2022–2023Harley DavidsonFLTRKSE CVO Road Glide Limited
    2023–2025Harley DavidsonFLTRT Trike Road Glide 3
    2017–2019Harley DavidsonFLTRU Road Glide Ultra
    2020–2025Harley DavidsonFLTRX Road Glide Custom
    2025Harley DavidsonFLTRXRRSE CVO Road Glide RR
    2017–2025Harley DavidsonFLTRXS Road Glide Special
    2018–2025Harley DavidsonFLTRXSE CVO Road Glide
    2024–2025Harley DavidsonFLTRXSE CVO Road Glide Custom
    2022–2023Harley DavidsonFLTRXST Road Glide ST
    2024–2025Harley DavidsonFLTRXSTSE CVO Road Glide ST
    2018–2022, 2025Harley DavidsonFXBB Softail Street Bob
    2022–2024Harley DavidsonFXBBS Softail Street Bob 114
    2018–2019, 2023–2025Harley DavidsonFXBR Softail Breakout
    2018–2020Harley DavidsonFXBRS Softail Breakout 114
    2019Harley DavidsonFXDR Softail Power Cruiser
    2019–2020Harley DavidsonFXDRS Softail FXDR 114
    2018–2019Harley DavidsonFXFB Softail Fat Bob
    2018–2023Harley DavidsonFXFBS Softail Fat Bob 114
    2018–2021Harley DavidsonFXLR Softail Low Rider
    2020–2025Harley DavidsonFXLRS Softail Low Rider S
    2022–2025Harley DavidsonFXLRST Softail Low Rider ST
    2022–2024Harley DavidsonFXST Softail

    Source: WPS vehicle-fitment data · WPS part 820-51548 · Checked November 12, 2026.

    Additional information

    Weight 11.02 lbs
    Dimensions 21.2 × 11.02 × 11.02 in

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    Parts & supplies

    • Engine gaskets & seals

      Match the engine and assembly; replace seals disturbed during access and check kit contents.

    • Engine oil

      Only refill or replace fluids disturbed by the repair, using the specified grade and capacity.

    • Installation tools

      Use the tools and torque procedure specified for your exact motorcycle.

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