128" Power Package — 128 in, 4.250" Bore, 4.500" Stroke, 11.1:1, Black

S&S CYCLE 128" Power Package — 128 in, 4.250" Bore, 4.500" Stroke, 11.1:1, Black – 18-25 Softail, 21, 24-25 Touring, 17-25 Trike

S&S CYCLE
0904-0133
310-1104C
Bolt-in 114"/117" CVO to 128" big bore kit with forged pistons, S&S 550 camshaft, and valve springs. Not for 121" CVO or Trike models.
Out of Stock
€4,072.48
€4,915.77
Save €843.29
VAT included
This product is currently unavailable.

Step up from 114" or 117" CVO to 128" with this bolt-in big bore kit from S&S CYCLE. Designed to deliver a straightforward upgrade without case machining, it includes forged pistons plus the core valvetrain and oiling components needed for the build.

Included components: oil pump/cam plate, pushrods with chrome covers, tappets, tappet cuffs, S&S 550 camshaft, and valve springs.

Fitment notes: Not for 121" CVO models. Not for any Trike models. Intake and rocker cover gaskets are not included.

: 0904-0133
Out of Stock

Data sheet

Units
Kit
Color/Finish
Black, Highlighted Fins
Brand
S&S CYCLE
Bore Size
4,250"
Displacement
128"
Cooling System
Oil Cooled
Stroke Length
4,500"
Compression Ratio
11.1:1
Cam Drive Type
Gear
Harley Family
Softail
Touring
Trike

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Softail Deluxe 107 Softail 2019
Harley Davidson Softail Deluxe 107 Softail 2020
Harley Davidson Softail Fat Boy 107 Softail 2018
Harley Davidson Softail Fat Boy 107 Softail 2020
Harley Davidson Softail Fat Boy Anniversary (ANX) 114 Softail 2018
Harley Davidson Softail Fat Boy 114 Softail 2019
Harley Davidson Softail Fat Boy 114 Softail 2020
Harley Davidson Softail Fat Boy 114 Softail 2021
Harley Davidson Softail Fat Boy 114 Softail 2022
Harley Davidson Softail Fat Boy 114 Softail 2023
Harley Davidson Softail Fat Boy 114 Softail 2024
Harley Davidson Softail Fat Boy 117 Softail 2025
Harley Davidson Electra Glide Revival 114 Touring 2021
Harley Davidson Softail Heritage Classic 107 Softail 2019
Harley Davidson Softail Heritage Classic 107 Softail 2020
Harley Davidson Softail Heritage Classic 107 Softail 2021
Harley Davidson Softail Heritage Classic 107 Softail 2022
Harley Davidson Softail Heritage Classic 114 Softail 2019
Harley Davidson Softail Heritage Classic 114 Softail 2020
Harley Davidson Softail Heritage Classic 114 Softail 2021
Harley Davidson Softail Heritage Classic 114 Softail 2022
Harley Davidson Softail Heritage Classic 114 Softail 2023
Harley Davidson Softail Heritage Classic 114 Softail 2024
Harley Davidson Softail Heritage Classic 117 Softail 2025
Harley Davidson Road King Special 114 Touring 2025
Harley Davidson Street Glide 117 Touring 2024
Harley Davidson Street Glide 117 Touring 2025
Harley Davidson Hydra-Glide Revival 114 Softail 2024
Harley Davidson Freewheeler 107 Trike 2017
Harley Davidson Freewheeler 107 Trike 2018
Harley Davidson Freewheeler 107 Trike 2019
Harley Davidson Freewheeler 114 Trike 2020
Harley Davidson Freewheeler 114 Trike 2021
Harley Davidson Freewheeler 114 Trike 2022
Harley Davidson Freewheeler 114 Trike 2023
Harley Davidson Freewheeler 114 Trike 2024
Harley Davidson Freewheeler 114 Trike 2025
Harley Davidson Softail Sport Glide 107 Softail 2019
Harley Davidson Softail Sport Glide 107 Softail 2020
Harley Davidson Softail Sport Glide 107 Softail 2021
Harley Davidson Softail Sport Glide 107 Softail 2022
Harley Davidson Softail Sport Glide 107 Softail 2023
Harley Davidson Softail Sport Glide 107 Softail 2024
Harley Davidson Softail Slim 107 Softail 2018
Harley Davidson Softail Slim 107 Softail 2020
Harley Davidson Softail Slim 107 Softail 2021
Harley Davidson Softail Fat Boy Gray Ghost 117 Softail 2025
Harley Davidson Road Glide 3 114 Trike 2023
Harley Davidson Road Glide 3 114 Trike 2024
Harley Davidson Road Glide 3 114 Trike 2025
Harley Davidson Road Glide 117 Touring 2024
Harley Davidson Road Glide 117 Touring 2025
Harley Davidson Softail Street Bob 107 Softail 2020
Harley Davidson Softail Street Bob 117 Softail 2025
Harley Davidson Softail Street Bob 114 Softail 2021
Harley Davidson Softail Street Bob 114 Softail 2021
Harley Davidson Softail Street Bob 114 Softail 2022
Harley Davidson Softail Street Bob 114 Softail 2023
Harley Davidson Softail Street Bob 114 Softail 2024
Harley Davidson Softail Breakout 107 Softail 2018
Harley Davidson Softail Breakout 107 Softail 2019
Harley Davidson Softail Breakout 107 Softail 2020
Harley Davidson Softail Breakout 117 Softail 2023
Harley Davidson Softail Breakout 117 Softail 2024
Harley Davidson Softail Breakout 117 Softail 2025
Harley Davidson Softail Breakout Anniversary (ANX) 114 Softail 2018
Harley Davidson Softail Breakout 114 Softail 2020
Harley Davidson Softail Breakout 114 Softail 2021
Harley Davidson Softail Breakout 114 Softail 2022
Harley Davidson Softail King 114 Softail 2019
Harley Davidson Softail King 114 Softail 2020
Harley Davidson Softail Fat Bob 107 Softail 2018
Harley Davidson Softail Fat Bob 107 Softail 2019
Harley Davidson Softail Fat Bob 107 Softail 2021
Harley Davidson Softail Fat Bob 114 Softail 2019
Harley Davidson Softail Fat Bob 114 Softail 2020
Harley Davidson Softail Fat Bob 114 Softail 2021
Harley Davidson Softail Fat Bob 114 Softail 2022
Harley Davidson Softail Fat Bob 114 Softail 2023
Harley Davidson Softail Low Rider 107 Softail 2019
Harley Davidson Softail Low Rider 107 Softail 2020
Harley Davidson Softail Low Rider S 114 Softail 2020
Harley Davidson Softail Low Rider S 114 Softail 2021
Harley Davidson Softail Low Rider S 117 Softail 2022
Harley Davidson Softail Low Rider S 117 Softail 2023
Harley Davidson Softail Low Rider S 117 Softail 2024
Harley Davidson Softail Low Rider S 117 H.O. Softail 2025
Harley Davidson Softail Low Rider ST EL Diablo 117 Softail 2022
Harley Davidson Softail Low Rider ST 117 Softail 2023
Harley Davidson Softail Low Rider ST 117 Softail 2024
Harley Davidson Softail Low Rider ST 117 H.O. Softail 2025
Harley Davidson Softail Standard Softail 2021
Harley Davidson Softail Standard Softail 2020
Harley Davidson Softail Standard Softail 2021
Harley Davidson Softail Standard Softail 2022
Harley Davidson Softail Standard Softail 2023
Harley Davidson Softail Standard Softail 2024