High port flow gives great performance now, and more later when additional upgrades are doneHeads are fully assembled with springs and valvesCompression ratios vary depending on cylinder heads...
Forged pistons for superior strengthModern alloys and piston skirt profiles for low noise and long engine lifeIncludes set of pistons, rings, wristpins, and clips
S&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and include stainless steel valves and high-lift (.585") springsIntake manifold and gasket kits are...