MAS produces Large Bore Engine Pistons that are used in Locomotives, Marine Applications and Heavy Duty Engines. MAS develops and manufactures pistons with diameters ranging from 120 mm to 200 mm featuring Single Alfin (NI resist) and Dual Alfin Gravity Die Cast Pistons. MAS manufacture these Pistons on special purpose CNC Machines to produce complex OD Profiles and Pin bores with Oval Boretrumpet borerelief's. Some pistons go through hard Anodizing of the Crown for Thermal Crack Protection as per customer’s requirement.