Wiseco K0446X6 Chevy LT1 Gen V Forged Piston Set 4.125 in. Bore -6.9cc Flat Top

The Wiseco K0446X6 is a Professional Series forged piston set engineered for the Chevrolet Gen V LT1 platform.

Key Specifications:

• Bore: 4.125 in.
• Crown: -6.9cc Flat Top (F/T)
• Compression Height: 1.105 in.
• Pin Diameter: 0.927 in.
• Pin Wall: 0.180 in. (designed for use with stock rod .180" wall pins and wire locks)
• Material: 2618 forged aluminum

Professional Series Features:

• 2618 Forged Aluminum Construction: Engineered, forged, and machined in the USA for superior tensile strength and thermal fatigue resistance
• ArmorGlide® Skirt Coating: Reduces friction, resists seizure, and promotes quieter operation
• Direct Injection Compatible Crown: Crown geometry specifically designed to work with the LT1's high-pressure direct injection system
• Premium Ring Package Included: Each kit ships with Wiseco's premium ring set matched to the bore size
• Deep Valve Pockets: Machined-in pockets provide generous valve clearance for aggressive cam profiles

Wiseco's Professional Series represents a no-compromise approach to piston design. These pistons are built for heavy to severe-duty race applications where reliability under extreme cylinder pressures and temperatures is non-negotiable. The -6.9cc flat-top dome design is well-suited for boosted LT1 applications targeting controlled compression ratios with forced induction setups.