128" Power Package — 128", 4.250" bore, 4.500" stroke, 11.1:1

S&S CYCLE 128" Power Package — 128", 4.250" bore, 4.500" stroke, 11.1:1 – 17-24 Touring, 17-25 Trike, 17-23 CVO

S&S CYCLE
0904-0143
310-1108C
Bolt-in big bore kit for 114" and 117" CVO to 128" applications. Includes forged pistons, oil pump/cam plate, pushrods with chrome covers, tappets, S&S 550 camshaft, and valve springs.
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Built as a bolt-in 114" to 128" big bore kit, this S&S Cycle Power Package is designed to upgrade 114" and 117" CVO to 128" applications without case machining.

It includes forged pistons, an oil pump/cam plate, pushrods with chrome covers, tappets, tappet cuffs, an S&S 550 camshaft, and valve springs.

Compatible with water-cooled applications where the listed fitment applies. Not for 121" CVO models or any Trike models. Intake and rocker cover gaskets are not included.

: 0904-0143
In Stock

Data sheet

Units
Kit
Color/Finish
Highlighted Fins, Black Granite
Brand
S&S CYCLE
Bore Size
4,250"
Displacement
128"
Cooling System
Water Cooled
Stroke Length
4,500"
Compression Ratio
11.1:1
Cam Drive Type
Gear
Harley Family
CVO
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 Electra Glide Highway King 114 Touring 2023
Harley Davidson Trike Tri Glide Ultra Classic 107 Trike 2017
Harley Davidson Tri Glide Ultra 107 Trike 2018
Harley Davidson Tri Glide Ultra 107 Trike 2019
Harley Davidson Tri Glide Ultra 114 Trike 2020
Harley Davidson Tri Glide Ultra 114 Trike 2021
Harley Davidson Tri Glide Ultra 114 Trike 2022
Harley Davidson Tri Glide Ultra 114 Trike 2023
Harley Davidson Tri Glide Ultra 114 Trike 2024
Harley Davidson Tri Glide Ultra 114 Trike 2025
Harley Davidson Tri Glide Ultra CVO 117 CVO 2020
Harley Davidson Tri Glide Ultra CVO 117 CVO 2021
Harley Davidson Tri Glide CVO 117 CVO 2022
Harley Davidson Electra Glide Ultra Limited 107 Touring 2017
Harley Davidson Ultra Limited Shrine Edition 107 Touring 2018
Harley Davidson Ultra Limited Shrine Edition 114 Touring 2019
Harley Davidson Ultra Limited Shrine Edition 114 Touring 2020
Harley Davidson Ultra Limited Shrine Edition 114 Touring 2021
Harley Davidson Ultra Limited Shrine Edition 114 Touring 2022
Harley Davidson Ultra Limited Shrine Edition 114 Touring 2023
Harley Davidson Glide Ultra Limited 114 Touring 2024
Harley Davidson Electra Glide Ultra Limited Low 107 Touring 2017
Harley Davidson Ultra Limited Low 107 Touring 2018
Harley Davidson Ultra Limited Low 114 Touring 2019
Harley Davidson Electra Glide Ultra Limited CVO 114 CVO 2017
Harley Davidson Ultra Limited CVO 117 CVO 2019
Harley Davidson Ultra Limited CVO 117 CVO 2020
Harley Davidson Ultra Limited CVO 117 CVO 2021
Harley Davidson Ultra Limited CVO Anniversary 117 Touring 2018
Harley Davidson Street Glide CVO 114 CVO 2017
Harley Davidson Street Glide CVO 117 CVO 2018
Harley Davidson Street Glide CVO 117 CVO 2020
Harley Davidson Street Glide CVO 117 CVO 2021
Harley Davidson Road Glide Limited 114 Touring 2020
Harley Davidson Road Glide Limited 114 Touring 2021
Harley Davidson Road Glide Limited 114 Touring 2022
Harley Davidson Road Glide Limited 114 Touring 2023
Harley Davidson Road Glide Limited 114 Touring 2024
Harley Davidson Road Glide Limited CVO 117 CVO 2022
Harley Davidson Road Glide Limited Anniversary CVO 117 CVO 2023
Harley Davidson Road Glide Ultra 107 Touring 2017
Harley Davidson Road Glide Ultra 107 Touring 2018
Harley Davidson Road Glide Ultra 114 Touring 2019
Harley Davidson Road Glide CVO 117 CVO 2018
Harley Davidson Road Glide CVO 117 CVO 2020
Harley Davidson Road Glide CVO 117 CVO 2021
Harley Davidson Road Glide CVO 117 CVO 2022