Wiseco 6394LXS Professional Series Chevy LS -8cc R/Dome Forged Piston 4.000 in. Bore

The Wiseco 6394LXS is a Professional Series shelf-stock forged piston engineered for Chevrolet LS platform builds demanding maximum strength and durability. Featuring a -8cc reverse dome (R/Dome) crown design, a 4.000-inch bore, and a 1.115-inch compression height, this piston is purpose-built for serious engine builders and racers working with LS-based powerplants.

Key Features:

• Professional Series forged construction — designed for heavy to severe-duty race applications with no-expense-spared engineering
• -8cc Reverse Dome (R/Dome) crown — provides precise combustion chamber volume control for dialing in target compression ratios
• 4.000 in. bore diameter with 1.115 in. compression height for LS platform fitment
• 0.927 in. wrist pin diameter — consistent with Wiseco's LS Professional Series standard pin sizing
• Forged from 2618 aluminum alloy — delivers the tensile strength required for power adder and high-boost applications
• ArmorGlide® skirt coating — reduces operating friction, minimizes skirt and cylinder wall wear, and quiets piston operation
• Dedicated forging — not an adapted design; each piston is a purpose-built forging optimized for the specific application
• Shelf stock (single unit) — sold individually, ideal for replacement or custom odd-count builds
• Includes premium rings — Professional Series pistons ship with high-quality ring packs
• Engineered, forged, and machined in the USA

The Wiseco Professional Series sets the benchmark for forged performance pistons in the LS market. Whether building a naturally aspirated stroker, turbocharged, supercharged, or nitrous-fed combination, the 6394LXS delivers the structural integrity and precision needed to support serious power levels reliably.