Big Bore Cylinder Kit — 4.320" bore, 4.375" stroke, 129" displacement

S&S CYCLE Big Bore Cylinder Kit — 4.320" bore, 4.375" stroke, 129" displacement – 18-24 Softail, 17-23 Touring, 17-19 Trike

S&S CYCLE
0931-1080
910-0844

Bolt-on Big Bore cylinder kit with MLS head gaskets, complete installation hardware, and cam cover badge. Made in the USA.

€1,795.75
€2,165.00
Save €369.25
VAT included
This product is currently unavailable.

Bolt-on design installs without machining the crankcase for a straightforward upgrade.

Original engine serial numbers are retained and stock engine height is maintained for clean fitment.

MLS (multi-layered steel) head gaskets are included along with all required gaskets and hardware for installation.

Includes a cam cover badge and is made in the USA.

: 0931-1080
Out of Stock

Data sheet

Type
Big Bore
Units
Kit
Color/Finish
Powder-Coated, Wrinkle Black, Non-Highlighted Fins
Brand
S&S CYCLE
Bore Size
4,320"
Displacement
129"
Stroke Length
4,375"
Compression Ratio
11.0:1
Model 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 2018
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 2019
Harley Davidson Softail Fat Boy 107 Softail 2020
Harley Davidson Softail Heritage Classic 107 Softail 2018
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 Road King 107 Touring 2017
Harley Davidson Road King 107 Touring 2018
Harley Davidson Road King 107 Touring 2019
Harley Davidson Road King 107 Touring 2017
Harley Davidson Road King 107 Touring 2018
Harley Davidson Road King 107 Touring 2019
Harley Davidson Road King 107 Touring 2020
Harley Davidson Road King 107 Touring 2021
Harley Davidson Road King 107 Touring 2022
Harley Davidson Road King Classic 107 Touring 2017
Harley Davidson Road King Classic 107 Touring 2018
Harley Davidson Road King Classic 107 Touring 2019
Harley Davidson Road King Special 107 Touring 2017
Harley Davidson Road King Special 107 Touring 2018
Harley Davidson Electra Glide Standard 107 Touring 2019
Harley Davidson Electra Glide Standard 107 Touring 2020
Harley Davidson Electra Glide Standard 107 Touring 2021
Harley Davidson Electra Glide Standard 107 Touring 2022
Harley Davidson Electra Glide Ultra Classic 107 Touring 2017
Harley Davidson Electra Glide Ultra Classic 107 Touring 2018
Harley Davidson Electra Glide Ultra Classic 107 Touring 2019
Harley Davidson Trike Tri Glide Ultra Classic 107 Trike 2017
Harley Davidson Tri Glide Ultra Anniversary 107 Trike 2018
Harley Davidson Tri Glide Ultra 107 Trike 2019
Harley Davidson Electra Glide Ultra Limited 107 Touring 2017
Harley Davidson Ultra Limited Shrine Edition 107 Touring 2018
Harley Davidson Electra Glide Ultra Limited Low 107 Touring 2017
Harley Davidson Ultra Limited Low 107 Touring 2018
Harley Davidson Street Glide 107 Touring 2017
Harley Davidson Street Glide 107 Touring 2018
Harley Davidson Street Glide 107 Touring 2019
Harley Davidson Street Glide 107 Touring 2017
Harley Davidson Street Glide Anniversary 107 Touring 2018
Harley Davidson Street Glide 107 Touring 2019
Harley Davidson Street Glide 107 Touring 2020
Harley Davidson Street Glide 107 Touring 2021
Harley Davidson Street Glide 107 Touring 2022
Harley Davidson Street Glide 107 Touring 2023
Harley Davidson Street Glide Special 107 Touring 2017
Harley Davidson Street Glide Special 107 Touring 2018
Harley Davidson Freewheeler 107 Trike 2017
Harley Davidson Freewheeler 107 Trike 2018
Harley Davidson Freewheeler 107 Trike 2019
Harley Davidson Softail Sport Glide 107 Softail 2018
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 2019
Harley Davidson Softail Slim 107 Softail 2020
Harley Davidson Softail Slim 107 Softail 2021
Harley Davidson Road Glide Ultra 107 Touring 2017
Harley Davidson Road Glide Ultra 107 Touring 2018
Harley Davidson Road Glide 107 Touring 2018
Harley Davidson Road Glide 107 Touring 2019
Harley Davidson Road Glide 107 Touring 2018
Harley Davidson Road Glide 107 Touring 2019
Harley Davidson Road Glide 107 Touring 2020
Harley Davidson Road Glide 107 Touring 2021
Harley Davidson Road Glide 107 Touring 2022
Harley Davidson Road Glide 107 Touring 2023
Harley Davidson Road Glide Special 107 Touring 2017
Harley Davidson Road Glide Special 107 Touring 2018
Harley Davidson Softail Street Bob 107 Softail 2018
Harley Davidson Softail Street Bob 107 Softail 2019
Harley Davidson Softail Street Bob 107 Softail 2020
Harley Davidson Softail Breakout 107 Softail 2018
Harley Davidson Softail Breakout 107 Softail 2019
Harley Davidson Softail Breakout 107 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 Low Rider 107 Softail 2018
Harley Davidson Softail Low Rider 107 Softail 2019
Harley Davidson Softail Low Rider 107 Softail 2020
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