Wiseco 6394LX05 Professional Series Forged Piston Chevy LS -8cc Reverse Dome 4.005 in. Bore

The Wiseco 6394LX05 is a Professional Series shelf-stock forged piston engineered for the Chevrolet LS platform. This is a single left-bank replacement piston featuring a -8cc reverse dome combustion chamber profile and a 4.005 in. bore, making it ideal for builders targeting elevated compression ratios on popular 6.0L LS variants including the LS2, LQ4, LQ9, LY6, and L76.

Wiseco's Professional Series represents their highest-tier production piston line ? built without compromise for serious engine builders and racers running heavy to severe-duty applications including naturally aspirated, boosted, and nitrous-fed combinations.

Key Features:

• Forged 2618 Aluminum Construction ? High-strength alloy delivers superior tensile strength and fatigue resistance under extreme cylinder pressures
• -8cc Reverse Dome Profile ? Engineered to optimize compression ratio for high-performance LS builds
• 4.005 in. Bore ? Shelf-stock sizing for direct fitment on standard LS 6.0L bore applications
• 0.927 in. Pin Diameter ? Standard LS pin bore; pin upgrade recommended for builds exceeding 700 HP
• ArmorGlide? Skirt Coating ? Seizure-resistant, friction-reducing coating for quieter operation and extended skirt and cylinder wall life
• 1.2mm / 1.2mm / 3.0mm Ring Grooves ? Compatible with premium thin-line performance ring packages for NA, boost, and nitrous applications
• Valve Pockets ? Machined valve reliefs to clear aggressive camshaft profiles
• Left-Bank / Shelf-Stock Designation (LX) ? Ready to ship, pre-machined for left-side cylinder bank installation

The 6394LX05 is sold individually as a single piston, allowing builders to replace specific cylinders or source matched sets. Engineered, forged, and machined in the USA, this piston is part of Wiseco's Professional Series lineup trusted by racers across drag, road course, and circle track applications.