Speedmaster PCE305.1020.04 Compatible with Chevy 400 427 Compatible with Ford 351W Windsor 4.165" 1.015" Dished -16cc Forged Pistons

Speedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.