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*.