Wiseco 60005RX125 Professional Series Chevy LS Forged Piston 4.125 in. Bore -1cc

The Wiseco 60005RX125 is a Professional Series individual forged piston designed for the Chevrolet LS engine platform. Featuring a 4.125-inch bore, 1.300-inch compression height, and a -1cc dish, this replacement piston is purpose-built for high-demand stroker, nitrous, and forced induction applications. It is compatible with a 4.250-inch stroke and a 9.800-inch deck height, and must be used with a K1 connecting rod.

Key Features:

• 2618 aluminum alloy forging — superior tensile strength and heat resistance for high-performance and power-adder builds
• ArmorGlide® skirt coating — reduces operating friction, minimizes skirt and cylinder wall wear, and allows tighter piston-to-wall clearances for improved ring seal
• -1cc dish crown — precision-machined for optimized compression ratio tuning
• 4.125 in. bore diameter with 1.300 in. compression height and 0.927 in. wrist pin diameter
• Rings included — recommended ring set 4127GFX; compatible with S643 wrist pin (included)
• Individual right-hand replacement piston — sold as a single unit for replacement or custom builds
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility
• Rated for heavy to severe duty race builds, including builds exceeding 1,500+ horsepower

The Wiseco Professional Series represents the top tier of the Wiseco automotive piston lineup — no-expense-spared components designed for serious racers and engine builders who demand maximum durability and performance. Rings and wrist pin are included.