Wiseco 6443RX125 Chevy LS Forged Shelf Stock Piston -23cc Reverse Dome 4.125 in. Bore

The Wiseco 6443RX125 is a Professional Series forged shelf stock piston designed for Chevrolet LS series engines. Featuring a -23cc reverse dome (R/Dome) crown profile and a 4.125-inch bore, this single piston is engineered for high-performance and racing applications where proven forged strength is essential.

Wiseco Professional Series pistons are no-expense-spared components built for serious racers and engine builders. Each piston is engineered, forged, and precision-machined in the USA from 2618 aluminum alloy, delivering the superior tensile strength required for heavy to severe duty race builds, including power adder applications.

Key Features:

• -23cc Reverse Dome (R/Dome) crown profile for optimized compression ratio tuning
• 4.125 in. bore diameter ? sold as a single shelf stock piston
• Forged from 2618 aluminum alloy for maximum tensile strength and durability
• ArmorGlide? skirt coating for reduced operating friction, seizure resistance, and quieter operation
• Fully machined crown with precision ring grooves and anti-detonation groove
• Additional ring seal improving features for consistent combustion chamber sealing
• Forced pin oiling for superior wrist pin and small-end lubrication
• Strutted skirt design maximizes strength-to-weight ratio
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility
• Designed for heavy to severe duty performance and race builds

As a shelf stock piston, the 6443RX125 is an immediately available single-unit replacement or build component, ideal for custom compression ratio tuning on LS platform engines. Wiseco has been a world leader in high-performance forged pistons for over 80 years, trusted by racers and engine builders across all forms of motorsports.