Wiseco K0418X75 Forged Piston Kit GM LS 4.075 in. Bore 3.900 in. Stroker .927 Pin

The Wiseco K0418X75 is a forged performance piston kit designed for GM LS stroker engine builds.

Constructed from 2618 high-strength aluminum alloy, these pistons deliver the tensile strength and fatigue resistance demanded by high-performance and power-adder builds. The ArmorGlide® skirt coating reduces operating friction and minimizes wear on both the piston skirt and cylinder wall, extending the service life of your build.

Kit Specifications:

• Bore: 4.075 in.
• Stroke: 3.900 in. (Stroker)
• Rod Length: 6.125 in.
• Wrist Pin Diameter: 0.927 in.
• Dish Volume: -20cc
• Compression Ratio: 9.3:1 (68cc chamber) / 9.6:1 (65cc chamber)
• Ring Pack: 1.5mm / 1.5mm / 3mm (premium rings included)

Key Features:

• Forged from 2618 aluminum alloy for superior strength in racing and power-adder environments
• ArmorGlide® skirt coating for reduced friction, noise, and wear
• Anti-detonation and pressure seal ring grooves
• Optimized skirt profile minimizes piston rock in stroker applications
• Designed for use with aftermarket or K1 connecting rods
• Pin upgrade recommended for builds exceeding 700 HP
• Engineered, forged, and machined in the USA

The K0418X75 is compatible with LS1, LS2, LS3, and LS6 cylinder heads and is an excellent foundation for a high-displacement stroker build seeking reliable, track-proven performance.