Outfit your truck or trailer to be Ready for the Road Ahead with enhanced comfort, stability, and control, with the Dayton Parts Full Tapered Rear Parabolic Leaf Spring. This replacement component provides additional support to the front, center, or rear of a vehicle, absorbing shocks and minimizing vibrations. Manufactured with a flexible body to prevent broken axles and bolts. FleetPride is your First Click in Heavy Duty .