Wiseco K0421X05 Chevy LS 3.900" Stroker Forged Piston Kit with .927" Pin

The Wiseco K0421X05 is a forged piston kit designed for Chevy LS engine stroker builds using a 3.900-inch stroke with a .927-inch wrist pin. Wiseco's forged pistons are manufactured from 2618 aluminum alloy using a proprietary forging process that produces a stronger, denser grain structure compared to cast pistons, making them ideal for high-performance, forced induction, and high-compression naturally aspirated applications.

Key Features:

• Designed for Chevy LS stroker applications with a 3.900" stroke
• Includes .927" wrist pin for direct fitment
• Constructed from high-strength 2618 forged aluminum alloy
• Lightweight design reduces reciprocating mass for improved engine response
• Precision CNC-machined for consistent sizing and ring land geometry
• Full-floating pin design for reduced friction and improved durability
• Compatible with standard LS ring packages
• Designed to withstand the demands of performance street and race applications

Wiseco pistons are manufactured in the USA and are a trusted choice among professional engine builders for both street performance and competition engines. The K0421X05 kit is engineered to deliver reliable performance in stroked LS configurations where durability and precision are critical.