Precision-engineered for the ultimate in safety and performance, Ultra shock absorbers by Gabriel provide improved comfort and control, long life and durability, and maximum shock performance for today's passenger cars. Ultra shocks are equipped with G-Force technology featuring Infinitely Variable Damping for on-demand control on all road conditions. And like all Gabriel shocks and struts, Ultra shocks feature a super-finished chromed piston rod for superior corrosion resistance and a leak-proof piston seal which extends product life.