Description
S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines
S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is compatible with stock crankcases, which means you won't have to do any machine work. The kit features MLS (multi-layered steel) head gaskets and is built with pride in the U.S.A.
Features
- Retains stock engine height
- Includes cubic inch cam cover badge
Fitment
| 2023 | Harley-Davidson | CVO Road Glide Limited |
| 2023 | Harley-Davidson | Road Glide ST FLTRXST |
| 2023 | Harley-Davidson | Street Glide ST FLHXST |
| 2023 | Harley-Davidson | Softail Low Rider ST FXLRST |
| 2021 | Harley-Davidson | Electra Glide Revival |
| 2020-2023 | Harley-Davidson | Road Glide Limited FLTRK |
| 2020-2023 | Harley-Davidson | Softail Low Rider S FXLRS |
| 2020-2023 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE |
| 2020-2023 | Harley-Davidson | Softail Standard FXST |
| 2019-2023 | Harley-Davidson | Electra Glide Standard EFI FLHTI |
| 2019-2020 | Harley-Davidson | FXDR 114 |
| 2018-2023 | Harley-Davidson | Softail Fat Bob 114 FXFBS |
| 2018-2023 | Harley-Davidson | Softail Heritage Classic 114 FLHCS |
| 2018-2023 | Harley-Davidson | Softail Street Bob FXBB |
| 2018-2023 | Harley-Davidson | Softail Fat Boy 114 FLFBS |
| 2018-2023 | Harley-Davidson | CVO Road Glide Custom FLTRXSE |
| 2018-2021 | Harley-Davidson | Softail Heritage Classic FLHC |
| 2018-2021 | Harley-Davidson | Softail Slim FLSL |
| 2018-2021 | Harley-Davidson | Softail Sport Glide FLSB |
| 2018-2020 | Harley-Davidson | Softail Breakout 114 FXBRS |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE |
| 2018-2019 | Harley-Davidson | Softail Breakout FXBR |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB |
| 2017-2023 | Harley-Davidson | Road King Special FLHRXS |
| 2017-2023 | Harley-Davidson | Freewheeler FLRT |
| 2017-2023 | Harley-Davidson | Street Glide EFI FLHX |
| 2017-2023 | Harley-Davidson | Street Glide Special FLHXS |
| 2017-2023 | Harley-Davidson | CVO Street Glide FLHXSE |
| 2017-2023 | Harley-Davidson | Road Glide Special FLTRXS |
| 2017-2023 | Harley-Davidson | Road Glide Custom FLTRX |
| 2017-2023 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG |
| 2017-2023 | Harley-Davidson | Road King EFI FLHR |
| 2017-2023 | Harley-Davidson | Electra Glide Ultra Limited FLHTK |
| 2017-2021 | Harley-Davidson | CVO Electra Glide Ultra Limited FLHTKSE |
| 2017-2021 | Harley-Davidson | Electra Glide Police FLHTPI |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Limited Low FLHTKL |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI |
