Bore: 81.51mm Length: 71.2 mm Compression Height: 39.2 mm Pin Length: 67 mm Pin Diameter: 22 mm Recess Depth 1: 8.6 mm Recess Diameter: 55 mm Machined: with cut-out for oil jet Surface: Tin-plated Top Land Height: 12.1 mm Production Number: 81 V 64 Piston Clearance: 0.03 mm Piston rings: 1.50x1.75x3.00mm