SuperSpring is the help spring, a suspension enhancement product engineered to enhance, support and help various types of original equipment suspension. SumoSprings: airless air spring that doesn't leak air or require airlines. Coil SumoSpring: designed to slide in between the turns of coils springs to enhance suspension. Trailer SumoSpring: mounts on trailer leaf spring assemblies, stabilize sway, absorb road shock and vibration and improve driver control. Come and check out other SuperSpring accessories, I'm sure they have something for you.