The patented valve and the use of pressurized nitrogen gas in the Excel-G series will restore driving comfort and dramatically reduce foaming or aeration that typically occurs in other shock absorbers. Specifications: - Restores OE performance - Monotube anti-foaming valve reduces foaming and performance fade - Triple-stage dual valve - Teflon-coated piston valve - Seamless cylinder without seam and ring, no leaks - Welded mounts and cushions - Hard chromed piston rod