Wiseco K495B125 Chevy Big Block Professional Forged Piston Set 4.625 in. Bore 1.065 in. CH +15.6cc Dome

The Wiseco K495B125 is a Professional Series forged piston set designed for Chevrolet Big Block engines. Built for serious engine builders and racers, this set features a Quick 8 dome design with a +15.6cc dome volume and an 18-degree valve angle configuration, making it ideal for use with 18-degree performance cylinder heads. With a 4.625-inch bore diameter (0.125 over) and a short 1.065-inch compression height, these pistons are engineered for high-compression, high-performance BBC builds.

Key Features:

• Bore Diameter: 4.625 in. (0.125 in. over)
• Compression Height: 1.065 in.
• Dome Volume: +15.6cc (Quick 8 dome)
• Valve Angle: 18-degree head application
• Alloy: 2618 high-strength forged aluminum
• Skirt Coating: ArmorGlide® — seizure resistant, friction-reducing, quieter operation
• Precision ring grooves and fully machined crown features
• Pin Diameter: 0.990 in.
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility

Wiseco's Professional Series pistons are no-expense-spared components built for racers who demand maximum strength and dimensional precision. The 2618 aluminum alloy construction provides the tensile strength required for performance and power adder applications, while the ArmorGlide® skirt coating reduces friction and wear for extended engine life.