Truck aftermarket springs are a suspension enhancement product engineered to enhance, support, and help various types of original equipment suspension. There are three basic types of springs: steel springs, pneumatic springs and leaf springs. With our SomoSprings, Coil SunoSprings and SuperCoils springs there are variations that are designed and manufactured in many different styles some with competing alternatives. They are more than just Truck aftermarket springs and helper springs, they are SuperSprings! Warranty