Wiseco K0422X125 Chevy LS 3.900 Stroker Forged Piston Kit 4.125in Bore .927 Pin

The Wiseco K0422X125 is a Professional Series forged piston kit engineered specifically for Chevrolet LS stroker builds using a 3.900-inch stroke crankshaft.

Key Features:

• Optimized for 3.900" stroke rod angle — reduces bore distortion, crank and rod stress, and maintains a consistent ring seal
• Increased compression height design — minimizes piston rock and improves cylinder stability for reliable performance
• Forged in-house from 2618 high-tensile-strength aluminum alloy — superior strength and thermal resilience compared to cast or hypereutectic pistons
• Includes H13 tool-steel wrist pins — engineered to handle the demands of power-adder applications
• GFX ring pack included: 1.2mm / 1.2mm / 3.0mm — premium ring set optimized for sealing efficiency and reduced friction
• ArmorGlide® skirt coating — provides seizure resistance, friction reduction, and quieter operation
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility

The Wiseco Professional Series represents a no-expense-spared approach to piston design, built for serious racers and engine builders tackling heavy to severe-duty race applications. Whether running forced induction, nitrous, or naturally aspirated high-compression builds, the K0422X125 delivers the durability and precision needed to push the limits of the LS platform.