Wiseco K0425X135 Chevy LS 4.135" Bore Forged Piston Kit 3.900" Stroke .927 Pin

The Wiseco K0425X135 is a Professional Series forged piston kit designed for high-performance Chevy LS engine builds using a 3.900" stroker configuration.

Key Features:

• 2618 high-strength aluminum alloy forging for superior tensile strength and fatigue resistance under severe duty conditions
• ArmorGlide® skirt coating reduces friction, resists seizure, and promotes quieter piston operation
• Anti-detonation and pressure seal grooves for improved ring seal integrity
• .927" pin diameter with included Spirolox® retainers and .150" wall wrist pin
• Premium ring set included — no additional ring purchase required
• LS1/LS2/LS3/LS6/LS7 compatible valve pocket reliefs
• Engineered, forged, and CNC-machined in the USA at Wiseco's Mentor, Ohio facility

Specifications:

• Bore: 4.135"
• Stroke: 3.900"
• Pin Diameter: .927"
• Platform: Chevy LS Series
• Kit Part Number: K0425X135

Wiseco's Professional Series pistons are built for heavy to severe-duty race builds where reliability and power density are non-negotiable. Whether you're building a street/strip LS or an all-out race engine, the K0425X135 delivers competition-grade quality straight out of the box.