Part Number: FCPPVW83Manufacturer: FCP EngineeringForged high performance pistons for a variety of applications in almost all engine types for racing and street use.Made of 4032-T6, molybdenum coated piston bottom.Cylinder bore: 83.00mm Stroke: 92.80mm Compression Ratio (CR): 13.0:1 Compression head (CH): 31mm Piston liner: 21mm diameter HD tool steel designed for high boost pressure applicationsVW Golf III, Passat / Seat Cordoba, Ibiza, Toledo - 2.0 16V (ABF)