Bushes are the small rubber parts that fit inside your suspension kit and protect the larger moving parts from coming together. Bumpstops also offer a degree of protection, especially when driving over bumpy terrain or holes in the road. Without these small rubber parts, your suspension will wear much faster, your ride won’t be as smooth and your car will run much louder. Check out the Audi S4 bushes we have in stock, with leading players like Powerflex on our shelves. We also carry a big range of Audi S4 bumpstops so that you can enjoy the smoothest ride possible. After all, that’s what suspension is all about.