Wiseco 6108A3 Chevrolet Big Block High-Compression Forged Piston 4.280 in. Bore

The Wiseco 6108A3 is a Professional Series forged piston designed for Chevrolet Big Block engines running high-compression builds. With a 4.280 in. bore and 1.760 in. compression height, this individual replacement piston is engineered for severe-duty race and performance applications where stock or lesser pistons simply won't hold up.

Key Specifications:

• Bore Diameter: 4.280 in.
• Compression Height: 1.760 in.
• Pin Diameter: 0.990 in.
• Application: Chevrolet Big Block
• Series: Professional
• Sold: Individually (single piston)

Professional Series Construction:

• Engineered, forged, and machined in the USA from 2618 aluminum alloy for superior tensile strength in power-adder and high-load applications
• Precision-machined ring grooves with calculated groove root diameters and axial widths ensure maximum ring seal and minimal blow-by
• Valve pocket designs allow maximum flow around the valve head, accommodating oversized valves and high-lift camshafts
• Optimized piston dome geometry promotes quench during the compression and combustion cycle, resisting detonation and pre-ignition
• Complex skirt profiles reduce friction while maintaining bore stability for consistent ring seal
• Includes premium rings for a complete, race-ready build

ArmorGlide® Skirt Coating: Wiseco's proprietary ArmorGlide skirt coating is a high-tech dry-film lubricant that reduces operating friction, improves seizure resistance, and allows a tighter piston-to-wall fit than uncoated pistons. The result is quieter operation, reduced piston rock, and improved wear resistance over the life of the engine.

Wiseco Professional Series pistons are the choice for serious engine builders who demand no-compromise performance. Manufactured at Wiseco's ISO-certified facility in Mentor, Ohio, each piston benefits from decades of race-proven forging expertise spanning Formula 1, NHRA Pro Stock, and Indy Racing League applications.