The Bilstein B4 01-05 BMW 325xi/330xi Front Right Twintube Strut Assembly is an aftermarket suspension component designed to replace the factory-fitted strut assembly. It is made of high-quality materials and is designed to provide superior damping performance in all road conditions. The strut assembly is designed to reduce body roll and improve handling and cornering stability. It also features a monotube design that offers a more comfortable ride and improved steering feedback. The strut assembly is easy to install and comes with all necessary hardware.