Never installed. Listing is for a single strut, not a pair. KYB Excel-G Shocks & Struts are designed to restore your vehicle's original capabilities. Excel-G is made on the same KYB OE assembly lines, uses the same OE quality components and is calibrated to compensate for worn suspensions to restore original, designed performance. The KYB Excel-G is a Nitrogen gas-charged twin-tube design that includes every quality component that KYB's global OEM products include. A seamless working cylinder vs. welded seams provides the best sealing surface throughout the entire piston stroke Precision multi-stage hydraulic valves that reduces fluid travel to minimize aeration and are calibrated the way OE intended the vehicle to perform Triple chrome-plated piston rod and multi-lip oil seals that reduce wear Solid, seamless mounting eye rings and bolt bushings that can't separate and become noisy Chemically bonded insulator mounting bushings that won't slip out A Teflon coated or phenolic piston band that reduces friction and provides a positive cylinder seal Specially formulated hydraulic fluid with multi-range viscosity for any weather climate Lexus GS 1998-2005