6pcs N52B2 Engine Pistons & Rings Set with cylinder bore Φ82.00mm and compression ratio 11:1 is designed for engine rebuilds on specific models including E60, E90, E92, 323i, 525i, X1, X3, and X4.This set is compatible with N52B25 2.5L naturally aspirated engines and serves as a direct replacement for components.The set includes six pistons and corresponding rings engineered to meet precise specifications.Each piston has a diameter of Φ82.00mm, wrist pin diameter of Φ20mm, and wrist pin length of 46mm.The ring pack consists of three rings per piston with thicknesses of 1.2mm, 1.5mm, and 2.0mm respectively, proper sealing and efficient combustion.Machined to standard tolerances, the pistons and rings are built to maintain dimensional accuracy and support consistent cylinder wall without expansion issues.The design supports under normal and sustained engine loads.This piston set is intended for use in naturally aspirated engine configurations where balanced performance and are required.