Wiseco 6452RX125 Chevy LS Series -20cc R/Dome 4.125 in. Bore Shelf Stock Piston

The Wiseco 6452RX125 is a Shelf Stock forged piston designed for Chevrolet LS series engines, featuring a -20cc reverse dome (R/Dome) crown and a 4.125-inch bore diameter. Part of Wiseco's proven LS shelf stock lineup, this single piston is engineered for high-performance street and race builds where a lower compression ratio is desired — ideal for forced induction, nitrous, or high-compression management applications.

Key Features:

• -20cc R/Dome crown — reduces compression ratio for boosted or power-adder builds
• 4.125 in. bore diameter — suits a range of LS platform displacements
• Forged construction from 2618 aluminum alloy for superior tensile strength and detonation resistance
• Precision-machined ring grooves with calculated groove root diameters for maximum ring seal and minimized blow-by
• Complex skirt profiles reduce friction while maintaining stability in the bore for optimal ring seal
• Dome geometry engineered for optimal quench during the compression and combustion cycle, promoting resistance to detonation and pre-ignition
• ISO-certified forging facility utilizing advanced materials and feature-aligned grain flow technology
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility

Wiseco Shelf Stock pistons deliver professional-grade performance at an accessible price point, making them a trusted choice for engine builders working on LS-platform performance builds. Sold as a single piston.