DPGKITS 4 PCS Pistons Rings Φ84mm / CR 10:1 For 328i 428i 528i X3 F30 F10 N20B20A 2.0T Car Accessories N20B20A N20B20B Set of 4 pistons and rings designed for 2.0T engines with model compatibility including 328i, 428i, 528i, X3, F30, F10, and engine codes N20B20A and N20B20B.Constructed using Nural Goetze materials to support strength and.Compression ratio is 10:1, optimized for improved power output and engine efficiency.Piston diameter measures Φ84mm with a piston pin diameter of Φ22mm, alignment with specified engine dimensions.Ring thickness options are available in 1.2mm, 1.5mm, and 2.0mm to accommodate various engine requirements.Designed for precise fitment across multiple vehicle models such as 125i, 320i, 428i, 528i, X1, X3, Z4, F30, F10, F25, E89, and others equipped with compatible 2.0T engines.Includes all necessary components for complete piston and ring replacement.Engineered to meet or exceed specifications for performance and. Compatibility Disclaimer: This is not an OEM item.Mentioned brands/models are used strictly for fitment illustration.