Big Bore Piston Kit — Bore 4.250", Stroke 4.625", 131 cu in

S&S CYCLE Big Bore Piston Kit — Bore 4.250", Stroke 4.625", 131 cu in – 22-23 Softail, 22-23 Touring, 22-23 Trike, 22-23 CVO

S&S CYCLE
0910-6523
920-0148
Complete piston kit including pistons, rings, wristpins, and clips; compression ratios are approximate and calculated using correct cylinder lengths.
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€617.69
€750.07
Save €132.38
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The Big Bore Piston Kit provides matched pistons, rings, wristpins, and clips for high-performance engine builds. 🔧

Each component is inspected for fit and finish to ensure reliable operation under demanding conditions.

  • Piston kit includes a complete set of pistons, rings, wristpins, and clip.
  • Compression ratios listed are approximate and are calculated using the correct length cylinders specified by the engine manufacturer.

Sold as a complete kit ready for installation.

: 0910-6523
In Stock

Data sheet

Units
Kit
Style
Big Bore
Brand
S&S CYCLE
Bore - Oversize
+0.010"
Bore Size
4,250"
Displacement
131"
Piston Head Shape
Dished
Stroke Length
4,625"
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