Wiseco K0449XS Professional Series Piston Kit Chevy LT1 Gen V -12cc Dish 1.299 CH

The Wiseco K0449XS is a Professional Series forged piston kit engineered specifically for the GM Gen V LT1 6.2L direct-injected V8 engine. Featuring a -12cc dish crown and a 1.299-inch compression height, this kit is purpose-built for performance builds targeting lower compression ratios — ideal for forced induction applications such as supercharged or turbocharged setups.

Wiseco's LT1 Gen V pistons are designed to retain the factory-proven direct injection (DI) bowl geometry, preserving the precise crown shape developed and validated by General Motors engineers. Rather than altering the critical fuel-spray targeting geometry, Wiseco replicates the OEM bowl angle and profile to ensure proper fuel vaporization and combustion efficiency in DI applications.

Key Features:

• -12cc Dish Crown: Reduces compression ratio for forced induction or high-boost builds
• 1.299-inch Compression Height: Designed to work with specific stroker rod and crank combinations
• 2618 High-Strength Forged Aluminum: Superior tensile strength and heat resistance for heavy-duty race use
• ArmorGlide® Skirt Coating: Reduces friction, improves wear resistance, and allows tighter piston-to-wall clearances
• ArmorPlating™ Thermal Protection: Crown coating that reflects heat and protects the piston under extreme combustion conditions
• Direct Injection (DI) Compatible Crown: Factory-spec bowl shape retained for proper fuel targeting in Gen V LT engines
• Anti-Detonation and Pressure Seal Grooves: Improves ring seal, reduces piston rock noise, and enhances combustion efficiency
• Strutted Forging Design: High strength-to-weight ratio construction purpose-built for the LT engine family
• Includes Premium GFX Ring Set: 1.2mm / 1.2mm / 3.0mm ring package included
• Engineered and Manufactured in the USA at Wiseco's Mentor, Ohio facility

The K0449XS is part of Wiseco's Professional Series — a no-compromise piston line built for serious engine builders working on heavy- to severe-duty race applications. Whether you're building a stroker LT1 for the drag strip or preparing a boost-fed street/strip engine, these pistons deliver the precision, durability, and performance that Wiseco has been known for since 1941.