S&S CYCLE Cylinder Kit - 131" Stroker Cylinder - Black Granite w/Highlights - M8 - Harley-Davidson '17-'25 - 910-0764A
🚚 Estimated Delivery: 09 Jul - 16 Jul
S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® platform (2017 and newer big twins) and open up a whole new level of performance for these engines. Combining a new design forged piston with their 4.25” cylinders to net a tire melting 131 cubic inches when paired with their 4.625” stroker crank. We build our big bore kits and cranks to much tighter tolerarances and with higher quality materials than the factory parts. This new piston/cylinder kit will be a solid platform for massive power.
Features & Benefits
- Huge displacement increase means huge power increase
- Works with stock crankcases
- Original engine serial numbers are retained
- Powder coat finish match factory finish, giving the bike a “sleeper” advantage
- .045" MLS (multi-layered steel) head gaskets
- Retains stock engine height
- Includes 131" Cam Cover Badge
- Must be used with our stroker flywheels to achieve 131" displacement (part #s 320-0605, 320-0620)
131" cam cover badge included.
Not for CVO 121" models.
Fitment Guide
| 2025 | Harley-Davidson | Softail Breakout FXBR | - | - |
| 2025 | Harley-Davidson | Street Glide EFI FLHX | - | - |
| 2025 | Harley-Davidson | FLHXU Street Glide Ultra | - | - |
| 2025 | Harley-Davidson | Softail Low Rider S FXLRS | - | - |
| 2025 | Harley-Davidson | Softail Low Rider ST FXLRST | - | - |
| 2025 | Harley-Davidson | Road Glide Custom FLTRX | - | - |
| 2025 | Harley-Davidson | Softail Fat Boy FLFB | - | - |
| 2025 | Harley-Davidson | Softail Heritage Classic FLHC | - | - |
| 2024-2025 | Harley-Davidson | Road Glide Police FLTRXP | - | - |
| 2024 | Harley-Davidson | FLI Hydra-Glide Revival | - | - |
| 2023-2025 | Harley-Davidson | FXBR Breakout 117 | - | - |
| 2023 | Harley-Davidson | FLHFB Electra Glide Highway King | - | - |
| 2022-2025 | Harley-Davidson | FXLRS Low Rider S 117 | - | - |
| 2022-2025 | Harley-Davidson | FXLRST Low Rider ST 117 | - | - |
| 2022-2023 | Harley-Davidson | FLTRKSE CVO Road Glide Limited | - | - |
| 2022-2023 | Harley-Davidson | FLTRXST Road Glide ST | - | - |
| 2022-2023 | Harley-Davidson | FLHXST Street Glide ST | - | - |
| 2022, 2025 | Harley-Davidson | Softail Street Bob FXBB | - | - |
| 2022 | Harley-Davidson | FXRST Low Rider El Diablo 117 | - | - |
| 2021-2024 | Harley-Davidson | FXBBS Street Bob 114 | - | - |
| 2021 | Harley-Davidson | FLH Electra Glide Revival | - | - |
| 2020-2024 | Harley-Davidson | FLTRK Road Glide Limited | - | - |
| 2020-2024 | Harley-Davidson | FXST Softail Standard 107 | - | - |
| 2020-2021 | Harley-Davidson | FXLRS Low Rider S 114 | - | - |
| 2019-2022 | Harley-Davidson | FLHT Electra Glide Standard | - | - |
| 2019-2020 | Harley-Davidson | FXDRS FXDR 114 | - | - |
| 2018-2024 | Harley-Davidson | FLFBS Fat Boy 114 | - | - |
| 2018-2024 | Harley-Davidson | FLHCS Heritage Classic 114 | - | - |
| 2018-2023 | Harley-Davidson | FXFBS Fat Bob 114 | - | - |
| 2018-2021 | Harley-Davidson | FLSB Sport Glide 107 | - | - |
| 2018-2021 | Harley-Davidson | FLSL Softail Slim 107 | - | - |
| 2018-2021 | Harley-Davidson | FLHC Heritage Classic 107 | - | - |
| 2018-2020 | Harley-Davidson | FXBRS Breakout 114 | - | - |
| 2018-2020 | Harley-Davidson | FXLR Low Rider 107 | - | - |
| 2018-2020 | Harley-Davidson | FLDE Deluxe 107 | - | - |
| 2018-2020 | Harley-Davidson | FXBB Street Bob 107 | - | - |
| 2018-2019 | Harley-Davidson | FXBR Breakout 107 | - | - |
| 2018-2019 | Harley-Davidson | FXFB Fat Bob 107 | - | - |
| 2018-2019 | Harley-Davidson | FLFB Fat Boy 107 | - | - |
| 2017-2025 | Harley-Davidson | Road King Police FLHP | - | - |
| 2017-2025 | Harley-Davidson | Electra Glide Police FLHTPI | - | - |
| 2017-2025 | Harley-Davidson | FLHX Street Glide | - | - |
| 2017-2025 | Harley-Davidson | FLHRXS Road King Special | - | - |
| 2017-2025 | Harley-Davidson | FLTRX Road Glide | - | - |
| 2017-2024 | Harley-Davidson | FLHTK Ultra Limited | - | - |
| 2017-2023 | Harley-Davidson | FLHXS Street Glide Special | - | - |
| 2017-2023 | Harley-Davidson | FLHXSE CVO Street Glide | - | - |
| 2017-2023 | Harley-Davidson | FLTRXS Road Glide Special | - | - |
| 2017-2022 | Harley-Davidson | FLHR Road King | - | - |
| 2017-2021 | Harley-Davidson | FLHTKSE CVO Limited | - | - |
| 2017-2019 | Harley-Davidson | FLHTKL Ultra Limited Low | - | - |
| 2017-2019 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic | - | - |
| 2017-2019 | Harley-Davidson | FLTRU Road Glide Ultra | - | - |
Specs
| Product Name | Cylinder Kit |
| Style | Bolt-On |
| Model | Stroker |
| Color/Finish | Highlighted Fins / Black Granite |
| Bore Size | 4.25" |
| Displacement | 131" |
| Stroke Length | 4.625" |
| Compression Ratio | 11.0:1 |
| Units | Kit |
| Riding Style | Street |
Delivery Info
Please Note - Warehouse Locations For This Part -
S&S CYCLE Cylinder Kit - 131" Stroker Cylinder - Black Granite w/Highlights - M8 - Harley-Davidson '17-'25 - 910-0764A
Gold Coast Warehouse- If your parts are in stock at our Gold Coast warehouse at the time of order, they will be shipped within 24hrs.
Supplier Warehouse - 2-3 Week Delivery- If your parts are located at our Supplier Warehouse, Delivery ETA is approx 2-3 weeks, as the parts are likely coming from our USA supplier warehouse. We will notify you once we receive it in Gold Coast warehouse and its on its way to you.