Wiseco K0426X8 Chevy LS 3.900 Stroker Forged Piston Kit with .927 Pin

The Wiseco K0426X8 is a Professional Series forged piston kit engineered specifically for Chevy LS 3.900-inch stroker builds. Optimized for the geometry of the 3.900-inch stroke, these pistons are designed to reduce bore distortion, minimize crank and rod stress, and maintain a consistent ring seal throughout the powerband.

Key Features:

• Forged 2618 aluminum construction — engineered and machined in the USA at Wiseco's Mentor, Ohio facility for superior tensile strength in performance and power-adder applications
• 3.900-inch stroker-optimized rod angle — reduces bore distortion and lateral stress for smoother, more precise piston travel
• .927-inch pin diameter — included wrist pins sized for proper fit in LS stroker applications
• ArmorGlide® skirt coating — seizure-resistant, friction-reducing coating for quieter operation and reduced cylinder and skirt wear
• Fully machined crown features — precision-cut valve pockets compatible with LS1, LS2, LS3, LS6, LS7, and LS9 cylinder heads
• Precision ring grooves — anti-detonation ring groove design for consistent ring seal and long service life
• Horizontal slot oiling in pin bores — maintains optimal wrist pin lubrication critical for high-load, high-RPM operation

Wiseco's Professional Series pistons are purpose-built for serious engine builders and racers running heavy to severe-duty builds, including naturally aspirated, boosted, and nitrous applications. With over 80 years of forged piston expertise, Wiseco delivers the precision and durability demanded by high-performance LS stroker builds.