Engine Pistons Rings Set Compression Ratio 10.7:1 For E90 E60 E83 128i 328i 528i X1 N52 3.0L Engines Pistons Rings Rods Part Material: grade aluminum Compression Ratio: 10.7:1 Compatibility: Designed for E90, E60, E83, 128i, 328i, 528i, X1, and N52 3.0L engines Quantity: Set of 6 pistons, rings, and rods The engine pistons rings set with a compression ratio of 10.7:1 is designed to enhance engine function.Constructed from grade aluminum, the pistons provide efficient heat dissipation and support under conditions.This set is engineered specifically for use with E90, E60, E83, 128i, 328i, 528i, X1, and N52 3.0L engines, proper fitment and integration. The set includes six pistons, corresponding rings, and connecting rods, all designed to function together to improve engine efficiency and output.Professional installation is recommended due to the complexity of engine assembly and the required for correct setup.Proper installation is essential for function and. This item is a third-party substitute.Use of brand names is limited to indicating which devices it supports.