Includes:
• 2x Cylinders
• 2x Piston Kits
• Head and Base Gaskets
Features
- Aerospace-grade all-aluminum cylinder with nickel-silicon-carbide (NSC) electroplated bore
- NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan
- Includes pair of all-aluminum NSC-coated bore cylinders, custom-forged pistons with high-tension rings specifically designed for NSC cylinders and a head/base gasket set
- Replacement gasket sets available separately
- Made in the USA
- No sleeving allows for larger bore sizes.
- Upgraded cylinders studs and head bolts recommended.
Specs
| Bore Size | 4.250" |
| Color/Finish | Black |
| Product Name | Cylinder Kit |
| Type | Big Bore |
| Displacement | 128" |
| Stroke Length | 4.500" |
| Style | Bolt-On |
| Units | Kit |
| Compression Ratio | 11.3:1 |
| Material | Aluminum |
| Cylinder Bore Coating | Nickel-Silicon Carbide |
| Features | Flat Top |
| Riding Style | Street |
| Year | Make | Model |
|---|---|---|
| 2017 | Harley-Davidson | FLHTKSE CVO Limited |
| 2017 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2018 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2018 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2018 | Harley-Davidson | FLHTKSE CVO Limited |
| 2018 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2018 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2018 | Harley-Davidson | FXBRS Breakout 114 |
| 2018 | Harley-Davidson | FXFBS Fat Bob 114 |
| 2019 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2019 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2019 | Harley-Davidson | FLHTKSE CVO Limited |
| 2019 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2019 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2019 | Harley-Davidson | FXBRS Breakout 114 |
| 2019 | Harley-Davidson | FXDRS FXDR 114 |
| 2019 | Harley-Davidson | FXFBS Fat Bob 114 |
| 2020 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2020 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2020 | Harley-Davidson | FLHTCUTGSE CVO Tri Glide |
| 2020 | Harley-Davidson | FLHTKSE CVO Limited |
| 2020 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2020 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2020 | Harley-Davidson | FXBRS Breakout 114 |
| 2020 | Harley-Davidson | FXDRS FXDR 114 |
| 2020 | Harley-Davidson | FXFBS Fat Bob 114 |
| 2020 | Harley-Davidson | FXLRS Low Rider S 114 |
| 2021 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2021 | Harley-Davidson | FLH Electra Glide Revival |
| 2021 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2021 | Harley-Davidson | FLHTCUTGSE CVO Tri Glide |
| 2021 | Harley-Davidson | FLHTKSE CVO Limited |
| 2021 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2021 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2021 | Harley-Davidson | FXFBS Fat Bob 114 |
| 2021 | Harley-Davidson | FXLRS Low Rider S 114 |
| 2022 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2022 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2022 | Harley-Davidson | FLHTCUTGSE CVO Tri Glide |
| 2022 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2022 | Harley-Davidson | FLTRKSE CVO Road Glide Limited |
| 2022 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2022 | Harley-Davidson | FXBBS Street Bob 114 |
| 2022 | Harley-Davidson | FXLRS Low Rider S 117 |
| 2022 | Harley-Davidson | FXLRST Low Rider ST 117 |
| 2023 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2023 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2023 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2023 | Harley-Davidson | FLTRKSE CVO Road Glide Limited |
| 2023 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2023 | Harley-Davidson | FXFBS Fat Bob 114 |
| 2023 | Harley-Davidson | FXLRS Low Rider S 117 |
| 2023 | Harley-Davidson | FXLRST Low Rider ST 117 |
| 2024 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2024 | Harley-Davidson | FLHCS Heritage Classic 114 |
| 2024 | Harley-Davidson | FLHXSE CVO Street Glide |
| 2024 | Harley-Davidson | FLTRXSE CVO Road Glide |
| 2024 | Harley-Davidson | FLTRXSTSE CVO Road Glide ST |
| 2024 | Harley-Davidson | FXLRS Low Rider S 117 |
| 2024 | Harley-Davidson | FXLRST Low Rider ST 117 |
Fitment details provided by supplier.
Product Videos
Custom Field
Type Big Bore
Color/Finish Black
Material Aluminum
