The Front & Rear Spring Assist by Gabriel® combines shock and spring technology to reduce the loss of ride height in ongoing loaded conditions. The constant-rate front coil springs can help improve stability and restore or maintain ride height, while the variable-rate rear coil springs provide 500 lbs. per pair of load capacity. Not to exceed vehicle GVWR (Gross Vehicle Weight Rating). Product does not increase payload. And like all Gabriel shocks and struts, Front & Rear Spring Assist feature a super-finished chromed piston rod for superior corrosion resistance and a leak-proof piston seal which extends product life.