S&S Cycle

S&S Cycle 2017+ M8 Models 4.5in Stroke 132in Big Bore Kit

SKU 910-0845A

MPN ssc910-0845A

$1643.95 · Available to order

S&S Cycle 2017+ M8 Models 4.5in Stroke 132in Big Bore Kit
S&S Cycle 2017+ M8 Models 4.5in Stroke 132in Big Bore Kit

S&S Cycle 2017+ M8 Models 4.5in Stroke 132in Big Bore Kit

The biggest Big Bore possible with a slip in kit! The S&S 4.320" bore cylinder kit takes your 107" M8 to 129" and the 114" to 132"

Confirmed vehicle fitment
YearsMakeModelSubmodelDrive
2022Harley-DavidsonFLTRKSE CVO Road Glide LimitedBase—
2017Harley-DavidsonFLSTF Fat BoyBase—
2018–2019Harley-DavidsonFXBR Breakout 107Base—
2024–2025Harley-DavidsonFXBR Breakout 117Base—
2017Harley-DavidsonFXDLS Low Rider SBase—
2022–2025Harley-DavidsonFXLRS Low Rider S 117Base—
2025Harley-DavidsonFLTRXRRSE CVO Road Glide RRBase—
2018–2022Harley-DavidsonFLTRXSE CVO Road GlideBase—
2018–2023Harley-DavidsonFLFBS Fat Boy 114Base—
2017Harley-DavidsonFLS Softail SlimBase—
2025Harley-DavidsonFLFB Fat Boy 117Base—
2017Harley-DavidsonFLSS Softail Slim SBase—
2018–2021Harley-DavidsonFLSB Sport Glide 107Base—
2018–2020Harley-DavidsonFLDE Deluxe 107Base—
2018–2020Harley-DavidsonFXLR Low Rider 107Base—
2020–2024Harley-DavidsonFXST Softail Standard 107Base—
2018–2023Harley-DavidsonFXFBS Fat Bob 114Base—
2017–2025Harley-DavidsonFLRT FreewheelerBase—
2022Harley-DavidsonFLHTCUTG Tri Glide Ultra G.I.Base—
2017Harley-DavidsonFLSTFBS Fat Boy SBase—
2017–2025Harley-DavidsonFLTRX Road GlideBase—
2025Harley-DavidsonFLTRXSTSE CVO Road Glide STBase—
2017–2022Harley-DavidsonFLHXSE CVO Street GlideBase—
2017–2018Harley-DavidsonXL1200C Sportster 1200 CustomBase—
2017–2025Harley-DavidsonFLHTCUTG Tri Glide UltraBase—
2017–2019Harley-DavidsonFLTRU Road Glide UltraBase—
2017Harley-DavidsonFXDF Fat BobBase—
2018–2020Harley-DavidsonFXBB Street Bob 107Base—
2017–2019Harley-DavidsonFLHTCU Electra Glide Ultra ClassicBase—
2017–2023Harley-DavidsonFLHXS Street Glide SpecialBase—
2017Harley-DavidsonFLSTC Heritage Softail ClassicBase—
2017–2023Harley-DavidsonFLTRXS Road Glide SpecialBase—
2019–2020Harley-DavidsonFXDRS FXDR 114Base—
2017–2025Harley-DavidsonFLHX Street GlideBase—
2018–2019Harley-DavidsonFLFB Fat Boy 107Base—
2018–2024Harley-DavidsonFLHCS Heritage Classic 114Base—
2017–2022Harley-DavidsonFLHR Road KingBase—
2017Harley-DavidsonFLSTN Softail DeluxeBase—
2018–2021Harley-DavidsonFLHC Heritage Classic 107Base—
2017–2021Harley-DavidsonFLHTKSE CVO LimitedBase—
2017Harley-DavidsonFXSB BreakoutBase—
2017Harley-DavidsonFXDL Dyna Low RiderBase—
2017Harley-DavidsonFXDL Low RiderBase—
2025Harley-DavidsonFXBB Street Bob 117Base—
2018–2020Harley-DavidsonFXBRS Breakout 114Base—
2023Harley-DavidsonFLHFB Electra Glide Highway KingBase—
2017–2025Harley-DavidsonFLHRXS Road King SpecialBase—
2025Harley-DavidsonFLSTFI Fat Boy Gray GhostBase—
2024Harley-DavidsonFLI Hydra-Glide RevivalBase—
2022–2023Harley-DavidsonFLHXST Street Glide STBase—
2022Harley-DavidsonFXRST Low Rider El Diablo 117Base—
2021Harley-DavidsonFLH Electra Glide RevivalBase—
2022–2023Harley-DavidsonFLTRXST Road Glide STBase—
2017Harley-DavidsonFXSE CVO Pro Street BreakoutBase—
2020–2021Harley-DavidsonFXLRS Low Rider S 114Base—
2019–2022Harley-DavidsonFLHT Electra Glide StandardBase—
2025Harley-DavidsonFLHXU Street Glide UltraBase—
2017Harley-DavidsonFXDWG Dyna Wide GlideBase—
2022–2025Harley-DavidsonFXLRST Low Rider ST 117Base—
2020–2024Harley-DavidsonFLTRK Road Glide LimitedBase—
2024–2025Harley-DavidsonFLTRT Road Glide 3Base—
2021–2024Harley-DavidsonFXBBS Street Bob 114Base—
2018–2019Harley-DavidsonFXFB Fat Bob 107Base—
2020–2022Harley-DavidsonFLHTCUTGSE CVO Tri GlideBase—
2018–2021Harley-DavidsonFLSL Softail Slim 107Base—
Specifications
CategoryEngine Components
Sub-CategoryPiston Sets - Powersports
UPC910-0845A
CARB ApprovedNo
Special OrderYes
Weight29.56 lb
Dimensions (L×W×H)19 × 15 × 10 in

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