Piston Kit Big Bore 4.250" for M8 Models — Bore 4.250", Displacement 128", Stroke 4.500"

S&S CYCLE Piston Kit Big Bore 4.250" for M8 Models — Bore 4.250", Displacement 128", Stroke 4.500" – 22-23 Softail, 22-23 Touring, 22-23 Trike, 22-23 CVO

S&S CYCLE
0911-0085
920-0135

Durable, precisely machined piston kit that delivers reliable compression and long service life. Built for easy installation and consistent operation.

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€662.46
€804.42
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The Piston Kit Big Bore for M8 Models is built for durability and consistent performance. 🔧

Each piston is machined to precise tolerances to provide dependable compression and long service life. 🛠️

Designed with installability and reliability in mind, the kit supports routine maintenance and engine upgrades while helping maintain smooth operation under varied riding conditions. ⚙️

: 0911-0085
In Stock

Data sheet

Units
Kit
Style
Forged Big Bore
Brand
S&S CYCLE
Engine Type
4-Stroke
Piston Material
Aluminum, Forged
Bore Size
4,250"
Displacement
128"
Stroke Length
4,500"
Piston Size
+0,01 mm
Ring Material
Steel
Harley Family
CVO
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 Fat Boy 114 Softail 2022
Harley Davidson Softail Fat Boy 114 Softail 2023
Harley Davidson Softail Heritage Classic 107 Softail 2022
Harley Davidson Softail Heritage Classic 114 Softail 2022
Harley Davidson Softail Heritage Classic 114 Softail 2023
Harley Davidson Road King 107 Touring 2022
Harley Davidson Road King Special 114 Touring 2022
Harley Davidson Road King Special 114 Touring 2023
Harley Davidson Electra Glide Standard 107 Touring 2022
Harley Davidson Tri Glide Ultra 114 Trike 2022
Harley Davidson Tri Glide Ultra 114 Trike 2023
Harley Davidson Tri Glide CVO 117 CVO 2022
Harley Davidson Glide Ultra Limited 114 Touring 2022
Harley Davidson Ultra Limited Shrine Edition 114 Touring 2023
Harley Davidson Street Glide 107 Touring 2022
Harley Davidson Street Glide 107 Touring 2023
Harley Davidson Street Glide Special 114 Touring 2022
Harley Davidson Street Glide Special Anniversary 114 Touring 2023
Harley Davidson Street Glide CVO 117 CVO 2022
Harley Davidson Street Glide CVO 121 CVO 2023
Harley Davidson Street Glide ST 117 Touring 2022
Harley Davidson Street Glide ST 117 Touring 2023
Harley Davidson Freewheeler 114 Trike 2022
Harley Davidson Freewheeler 114 Trike 2023
Harley Davidson Softail Sport Glide 107 Softail 2022
Harley Davidson Softail Sport Glide 107 Softail 2023
Harley Davidson Road Glide Limited 114 Touring 2022
Harley Davidson Road Glide Limited 114 Touring 2023
Harley Davidson Road Glide Limited CVO 117 CVO 2022
Harley Davidson Road Glide Limited Anniversary CVO 117 CVO 2023
Harley Davidson Road Glide 3 114 Trike 2023
Harley Davidson Road Glide 107 Touring 2022
Harley Davidson Road Glide 107 Touring 2023
Harley Davidson Road Glide Special 114 Touring 2022
Harley Davidson Road Glide Special 114 Touring 2023
Harley Davidson Road Glide CVO 117 CVO 2022
Harley Davidson Road Glide CVO 121 CVO 2023
Harley Davidson Road Glide ST 117 Touring 2022
Harley Davidson Road Glide ST 117 Touring 2023
Harley Davidson Softail Street Bob 114 Softail 2022
Harley Davidson Softail Street Bob 114 Softail 2023
Harley Davidson Softail Breakout 117 Softail 2023
Harley Davidson Softail Breakout 114 Softail 2022
Harley Davidson Softail Fat Bob 114 Softail 2022
Harley Davidson Softail Fat Bob 114 Softail 2023
Harley Davidson Softail Low Rider S 117 Softail 2022
Harley Davidson Softail Low Rider S 117 Softail 2023
Harley Davidson Softail Low Rider ST EL Diablo 117 Softail 2022
Harley Davidson Softail Low Rider ST 117 Softail 2023
Harley Davidson Softail Standard Softail 2022
Harley Davidson Softail Standard Softail 2023