S&S 4.125" Big Bore Piston Kit +.010" (920-0141)
$648.95
$542.33
(You save
$106.62
)
- All piston kits come with two pistons, rings, wrist pins, and wrist pin keepers
- For 124" M8 motors
- 4.375" stroke length
- Compression ratios listed are approximate and are calculated using the correct length cylinders as specified by S&S
- Requires the use of connecting rods with a rod length of 7.440"; Use of earlier connecting rods with a rod length of 7.470" will result in a slight increase in the compression ratio of about 1/2 point, and may also result in clearance problems (check all piston to cylinder head clearances carefully when using the early style rods).
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2018-2019 | Harley-Davidson | Breakout FXBR 107 | |
| 2023 | Harley-Davidson | Breakout FXBR 117 | |
| 2018-2020 | Harley-Davidson | Breakout FXBRS 114 | |
| 2017 | Harley-Davidson | Breakout FXSB | |
| 2017-2021 | Harley-Davidson | CVO Limited FLHTKSE | |
| 2018-2023 | Harley-Davidson | CVO Road Glide FLTRXSE | |
| 2022-2023 | Harley-Davidson | CVO Road Glide Limited FLTRKSE | |
| 2020-2022 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE | |
| 2018-2020 | Harley-Davidson | Deluxe FLDE 107 | |
| 2019-2022 | Harley-Davidson | Electra Glide Standard FLHT | |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2018-2019 | Harley-Davidson | Fat Bob FXFB 107 | |
| 2018-2023 | Harley-Davidson | Fat Bob FXFBS 114 | |
| 2018-2019 | Harley-Davidson | Fat Boy FLFB 107 | |
| 2018-2023 | Harley-Davidson | Fat Boy FLFBS 114 | |
| 2017 | Harley-Davidson | Fat Boy FLSTF | |
| 2017 | Harley-Davidson | Fat Boy Lo S FLSTFBS | |
| 2017 | Harley-Davidson | Freewheeler FLRT | |
| 2019-2020 | Harley-Davidson | FXDR FXDRS 114 | |
| 2018-2021 | Harley-Davidson | Heritage Classic FLHC 107 | |
| 2018-2023 | Harley-Davidson | Heritage Classic FLHCS 114 | |
| 2017 | Harley-Davidson | Heritage Softail Classic FLSTC | |
| 2022 | Harley-Davidson | Low Rider El Diablo | |
| 2018-2020 | Harley-Davidson | Low Rider FXLR 107 | |
| 2020-2021 | Harley-Davidson | Low Rider S FXLRS 114 | |
| 2022-2023 | Harley-Davidson | Low Rider S FXLRS 117 | |
| 2022-2023 | Harley-Davidson | Low Rider ST FXLRST 117 | |
| 2023 | Harley-Davidson | Road Glide 3 FLTRT | |
| 2017-2023 | Harley-Davidson | Road Glide FLTRX | |
| 2020-2023 | Harley-Davidson | Road Glide Limited FLTRK | |
| 2017-2023 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2022-2023 | Harley-Davidson | Road Glide ST FLTRXST | |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2017-2022 | Harley-Davidson | Road King FLHR | |
| 2017-2023 | Harley-Davidson | Road King Special FLHRXS | |
| 2017 | Harley-Davidson | Softail Deluxe FLSTN | |
| 2017 | Harley-Davidson | Softail Slim FLS | |
| 2018-2021 | Harley-Davidson | Softail Slim FLSL 107 | |
| 2017 | Harley-Davidson | Softail Slim S FLSS | |
| 2020-2023 | Harley-Davidson | Softail Standard FXST 107 | |
| 2018-2021 | Harley-Davidson | Sport Glide FLSB 107 | |
| 2018-2020 | Harley-Davidson | Street Bob FXBB 107 | |
| 2021-2023 | Harley-Davidson | Street Bob FXBBS 114 | |
| 2017 | Harley-Davidson | Street Glide CVO FLHXSE | |
| 2017 | Harley-Davidson | Street Glide FLHX | |
| 2017 | Harley-Davidson | Street Glide Special FLHXS | |
| 2023 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | |
| 2017-2022 | Harley-Davidson | Tri Glide Ultra FLHTCUTG | |
| 2022 | Harley-Davidson | Tri Glide Ultra FLHTCUTG G.I. Enthusiast Collectio | |
| 2017-2023 | Harley-Davidson | Ultra Limited FLHTK | |
| 2017-2019 | Harley-Davidson | Ultra Limited Low FLHTKL | |