The MAHLE ProSeries piston was developed to meet the demanding needs of professional racers. The set is race-ready and designed for—asphalt and dirt circle track racing as well as drag racing. MAHLE Motorsports gives you a competitive edge with pistons that are meticulously finish prepared right out of the box. MAHLE machines the correct valve reliefs, dome profiles, and ring grooves for upper level competition.
The pins are CNC machined with proper clearances, and every piston is hand deburred. Plus, with factory applied phosphate and GRAFAL® skirt coatings, you eliminate the expense and uncertainty of aftermarket coatings.
ProSeries features includes:
* MAHLE’s GRAFAL® skirt coating - reduces drag, scuffing, friction and cylinder bore wear.
** Phosphate coating provides the grey appearance to the MAHLE 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 micro-welding. The piston crown is still machineable.