S&S Cycle T143 Forged Piston Kit
The T143 forged piston kit is the dedicated piston-set for S&S T143 engine rebuilds, available in standard bore for new T143 cylinders or in +.020 inch oversize for cylinders bored out during the rebuild.
Key Features
- Forged piston kit purpose-built for the S&S T143 engine
- Two sizes: standard bore (4.425 inch) for new T143 cylinders, or +.020 inch oversize (4.445 inch) for bored-out cylinders
- Forged construction matched to the T143 application
- Sold as a piston-set per kit per bore size
Technical Specifications
- Application: S&S T143 engine piston-set
- Construction: Forged
- Standard Bore: 4.425 inch (SKU 920-0106)
- +.020 Inch Oversize Bore: 4.445 inch (SKU 920-0111)
Fitment Notes
- Standard-bore variant fits new S&S T143 cylinders; +.020 inch oversize variant fits S&S T143 cylinders bored 0.020 inch during rebuild.
- The kit does not include cylinders or piston ring break-in materials; the rebuilder supplies those as part of the broader top-end service.
- This is a piston-set rebuild component specific to the S&S T143 – not interchangeable with other S&S engine displacements.
- Refer to the Fitment tab for the dimensional breakdown.
- Not affiliated with or endorsed by Harley-Davidson.
