Wiseco K0426X65 Chevy LS 3.900 Stroker Forged Piston Kit - 4.065 in. Bore

The Wiseco K0426X65 is a Professional Series forged piston kit designed specifically for Chevrolet LS engines built around a 3.900-inch stroker crankshaft.

Key Features:

• Forged from 2618 aluminum alloy for superior tensile strength in power-adder and heavy-duty race applications
• Optimized for 3.900-inch stroke rod angle, reducing bore distortion, crank and rod stress, and maintaining consistent ring seal
• ArmorGlide® skirt coating reduces operating friction and noise while minimizing skirt and cylinder wear
• Horizontal slot oiling in pin bores ensures optimal wrist pin and small-end lubrication for long service life
• Accumulator groove helps maintain consistent ring seal and power output
• Premium GFX ring pack included — no additional ring sourcing required
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio manufacturing facility

Specifications:

• Engine Platform: Chevrolet LS
• Stroke: 3.900 in.
• Bore Size: 4.065 in.
• Compression Height: 1.165 in.
• Pin Diameter: 0.927 in.
• Series: Professional

Wiseco Professional Series pistons are no-expense-spared components built for serious racers and engine builders. Whether the application is street/strip, drag racing, or circle track, the K0426X65 delivers the precision engineering and premium materials needed for a reliable, high-output LS stroker combination.