These pistons are forged from 2618T aluminum alloy and machined on dedicated CNC machine cells to tight tolerances. 2618 aluminum has a lower silicon content than other alloys. That makes the pistons stronger and more ductile—perfect for high-load, high-stress applications like superchargers, turbochargers, or nitrous oxide.
Other features include:• Rated to handle up to 1,500 horsepower• -21.1cc dish with two valve reliefs• Lateral gas-ported to maintain tighter piston-to-bore clearances for better sealing• 10.5:1 compression on E85 with 1.338-inch compression height• .990-inch chromoly wristpins for use with wire locks• Choice of 4.225- or 4.250-inch bore sizes