Wiseco K431A4 Forged Piston Kit for Chevy Small Block 4.040 Inch Bore

The Wiseco K431A4 is a high-performance forged piston kit designed for Chevrolet small block engines with a 4.040 inch bore diameter. This kit is engineered for durability and power, making it an excellent choice for engine rebuilds, performance upgrades, and racing applications including 302, 327, and 350 cubic inch Chevy small blocks.

Key Specifications:

• Bore Size: 4.040 inches
• Compression Height: 1.550 inches
• Piston Material: 4032 aluminum alloy for superior strength and thermal stability
• Forged construction for maximum durability under high-performance conditions
• Complete kit includes pistons, rings, wrist pins, and circlips

Performance Features:

• Precision CNC machined in Wiseco's Mentor, Ohio facility for exact tolerances
• Advanced forging process with grain flow technology for enhanced strength
• Engineered ring grooves optimize ring seal and minimize blow-by
• Designed to withstand high RPM and boost applications
• Compatible with stock or aftermarket connecting rods

Wiseco has been manufacturing premium forged pistons for over 80 years, earning a reputation as the industry leader in quality and performance. Each piston is built to exacting standards to ensure reliable operation in street performance, drag racing, and road racing applications. The 4032 alloy composition provides excellent wear resistance while maintaining proper piston-to-wall clearances across a wide temperature range.