S&S Cycle 4.425 Inch Bore Forged Piston Kit for T143 Engines
An engine rebuild is only as good as the pistons inside it, and the S&S piston kit for the T143 gives that rebuild a foundation worth trusting. Engineered to match the operating demands of the T143 from the first start, these pistons hold tight tolerances through heat cycles and hard use to keep the engine delivering the performance it was designed for.
Key Features
- Forged construction for superior strength and dimensional stability compared to cast pistons under high-heat operating conditions
- Precision-machined to T143 bore specifications for correct fit and optimal ring seal
- Available in standard bore and +.020 inch oversize – select the correct size for your cylinder condition
- Engineered to match the operating parameters of the S&S T143 engine for consistent performance across the rebuild life
Technical Specifications
- Bore Diameter: 4.425 inch (standard) or 4.445 inch (+.020 inch oversize)
- Construction: Forged
- Compatible Engine: S&S T143
- Size Options: Standard bore (920-0106) for standard cylinder dimensions; +.020 inch oversize (920-0111) for cylinders bored .020 inch over standard
Fitment Notes
- Select standard bore (920-0106) for T143 cylinders at factory dimensions – correct for fresh cylinder bores or unworn walls
- Select +.020 inch oversize (920-0111) for T143 cylinders that have been bored .020 inch over standard to clean up wear or damage
- Verify cylinder bore dimension before ordering – incorrect piston size will cause improper ring seal and premature wear
- Designed specifically for the S&S T143 engine; not intended for use in other engine configurations
