Forged Piston Set, 3.800" Bore, Flat Top, 2.2cc Volume

The Wiseco K474M965 piston set is engineered for high-performance Chevrolet LS-based platforms, including Gen III and Gen IV engines. These pistons utilize dedicated forgings and are precision CNC-machined from a 4032 aluminum alloy for superior strength and durability under demanding conditions. The K474M965 features a flat top design with a 2.2cc volume, optimized skirt profiles, and precision-machined ring grooves measuring 1/16, 1/16, and 3.0mm. They are designed to accommodate a 3.800-inch bore and a 3.622-inch stroke, paired with a 6.125-inch rod length, and a 1.300-inch compression height. Wiseco's late model EFI line is built to withstand high boost and nitrous applications while maintaining quiet street operation and a long service life. Custom piston variants are also available for specific build requirements. Piston rings are not included with this set. Wiseco pistons are designed primarily for off-highway use. Always consult with a professional when installing performance engine components.