The Power Pak pistons are predominately made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability. Rated for 500hp and can handle up to 25lbs of boost
Phosphate coating provides the grey appearance to the PRO SERIES PISTON. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oiling system of the engine reaches operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and microwelding. The piston crown is still machineable.
NOTE: Price is for piston kit only, rods not included.