This King Audi BYT/CDNC/CCZD/CPSA Coated Performance Connecting Rod Bearing Set is a high-performance bearing set designed for use in Audi engines. It features a special coating to reduce wear and tear, and is designed to provide superior performance and durability. The set includes four bearings, which are designed to fit Audi engines with a crankshaft journal diameter of 55.7mm. The bearings are made from high-quality materials and are precision-machined for a precise fit. This set is ideal for those looking to upgrade their engine's performance and reliability.