Tristar International offers Steel made Parabolic Springs. Tristar International offers multi-leaf and parabolic leaf springs for trucks, pick-ups, boat-trailers, transit vehicles, SUVs, lift kits, lowering kits and 4 wheel drives. The Steel made Parabolic Springs are produced using only true parabolic tapering sequences with strict tolerance, they offer unparalleled load carrying capacity. To enable ease of mounting, special attention is given to maintain dimensional accuracy of the spring eyes. The centre holes of the centre bolt are scientifically shaped to keep typical parabolic high tensile forces in control. Minimum inter-leaf friction and contact, not only improves the ride characteristics but also enables the use of more durable corrosion protection. The leaves of Steel made Parabolic Springs are painted on all sides using zinc rich primer and a coat of special paint. The steel used in Parabolic Spring are50CrV4, 60SiMn5, 55Cr3, 55Si7, and 51CrMoV4.
