The 1993-1999 Mercedes S-Class Rear Suspension Conversion Kit is brand new and is sold as a Pair. Mercedes S Class struts convert in less than 1 hour. There are no modifications necessary for the Mercedes S Class Suspension conversion. The struts come with everything you need for a simple strut replacement on your S Class suspension. Your new S Class Rear struts will perform the way you expect a Mercedes S Class suspension to. Our S Class struts have a *Lifetime Warranty*.