The S&S CYCLE Performance Piston Assembly is a complete piston kit engineered for the S&S Super Stock® XL 1200 cylinder head. Each piston is forged from aluminum, delivering the strength required for a high‑compression street engine while maintaining a lightweight reciprocating mass. With a bore of 3.500 in and a stroke of 4‑5/8 in, the kit produces a 12.2:1 compression ratio and a total displacement of 1 200 cc. The pistons feature a deck height of 1.1875 in and are sized for a standard bore oversize, ensuring proper clearance and reliable sealing under aggressive riding conditions.
Designed for street‑oriented performance, this kit provides the precise tolerances needed for consistent power delivery and durability. The high‑compression design raises cylinder pressure, enhancing throttle response and mid‑range torque without sacrificing reliability. Available in multiple standard configurations, the pistons integrate seamlessly with the XL 1200 platform, offering a turnkey solution for riders seeking a measurable boost in top‑end performance while retaining the engine’s original character.