The King Audi R8 4.2L/5.2L / Lamborghini Gallardo/Huracan V10 Performance Rod Bearing Set is a high-performance set of bearings designed for use in the Audi R8 and Lamborghini Gallardo and Huracan V10 engines. The set is composed of high-strength steel bearings which have been designed to increase engine durability and performance. The set is designed to reduce friction and wear, increasing engine efficiency and power output. The bearing set is also designed to reduce noise and vibration, resulting in a smoother running engine.