The Bilstein 17-21 BMW 530i B4 OE Replacement Shock Absorber - Front Right is a high-performance shock absorber designed to replace the original equipment shock absorber on the BMW 530i. It features a monotube design that provides superior handling and stability, and it is constructed from high-quality materials for maximum durability. It is specifically designed to provide a comfortable ride, reduce body roll, and improve overall performance. The shock absorber is covered by a limited lifetime warranty for peace of mind.