Piston and ring set designed for 2.0T turbo engines.Constructed with pistons and rings made from Nural Goetze materials, engineered for under performance conditions.Features a compression ratio of 10:1, supporting a balanced output of power and efficiency.Piston diameter measures Φ84mm with a pin diameter of Φ22mm, intended for direct fitment on select models equipped with N20 and N26 engines.Compatible with vehicles including 125i, 220i, 228i, 320i, 328i, 428i, 528i, X1, X3, X4, X5, X6, and Z4.Ring thickness options are 1.2mm, 1.5mm, and 2.0mm, allowing customization based on driving demands.The set includes four pistons, four rings, and a complete ring set for comprehensive engine reconditioning.Designed to maintain engine efficiency with effective sealing to reduce oil consumption and support sustained under elevated stress. Compatibility Statement: This is not an manufacturer part.Brand/model references are used for fitment guidance.