| Specification | Value |
|---|---|
| Compression Ratio | 11.1:1 |
| Product Name | Performance Kit |
| Features | Cam Chain Tensioner / Quickee Pushrods w/Chrome Covers |
| Riding Style | Street |
| Cooling System | Oil Cooled |
| Bore Size | 4.250" |
| Color/Finish | Black / Highlighted Fins |
| Stroke Length | 4.500" |
| Cam Drive Type | Chain |
| Displacement | 128" |
| Units | Kit |
| Model | Power Package |
- 114" to 128" big bore kit; 114" and 117" CVO to 128" big bore kit
- Bolt-in kit, case maching not required
- Forged pistons
- Includes oil pump/cam plate, pushrods with chrome covers, tappets, tappet cuffs, S&S 550 camshaft, and valve springs
- Not for 121" CVO models.
FITMENTS
| Year | Make | Model |
|---|---|---|
| 2017-2023 | Harley-Davidson | FLHXS Street Glide Special |
| 2017-2023 | Harley-Davidson | FLTRXS Road Glide Special |
| 2018-2020 | Harley-Davidson | FXBRS Breakout 114 |
| 2019-2020 | Harley-Davidson | FXDRS FXDR 114 |
| 2022-2024 | Harley-Davidson | FXLRS Low Rider S 117 |
| 2022-2024 | Harley-Davidson | FXLRST Low Rider ST 117 |
| 2017-2025 | Harley-Davidson | FLHRXS Road King Special |
| 2023-2025 | Harley-Davidson | FLTRT Road Glide 3 |
| 2017-2025 | Harley-Davidson | Road King Police FLHP |
| 2019-2022 | Harley-Davidson | FLHT Electra Glide Standard |
| 2017-2025 | Harley-Davidson | Electra Glide Police FLHTPI |
| 2018-2024 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2023-2024 | Harley-Davidson | FXBR Breakout 117 |
| 2018-2023 | Harley-Davidson | FXFBS Fat Bob 114 |
| 2018-2022 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2017-2025 | Harley-Davidson | FLHX Street Glide |
| 2022-2023 | Harley-Davidson | FLHXST Street Glide ST |
| 2018-2024 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2021-2024 | Harley-Davidson | FXBBS Street Bob 114 |
| 2020-2021 | Harley-Davidson | FXLRS Low Rider S 114 |
| 2017-2025 | Harley-Davidson | FLRT Freewheeler |
| 2024-2025 | Harley-Davidson | Road Glide Police FLTRXP |
| 2022-2023 | Harley-Davidson | FLTRXST Road Glide ST |
| 2017-2022 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2023 | Harley-Davidson | FLHFB Electra Glide Highway King |
| 2025 | Harley-Davidson | Road Glide 3 FLTRT |
| 2025 | Harley-Davidson | Street Glide EFI FLHX |
| 2022 | Harley-Davidson | FXRST Low Rider El Diablo 117 |
| 2024 | Harley-Davidson | FLI Hydra-Glide Revival |
| 2025 | Harley-Davidson | Freewheeler FLRT |
| 2025 | Harley-Davidson | Road Glide Custom FLTRX |
- Color:
- Black
