Black MAX Shock Absorber w/Black Boot 88-99 Chevrolet C1500 88-99 GMC C1500 99-06 Silverado/Sierra 1500 07 Silverado 1500 Classic 07 GMC Sierra 1500 Classic 09-17 Ram 1500 SkyjackerBlack Max twin tube shock absorbers have increased fluid capacity and utilize foam cell technology. When the shock is working hard and gets hot, the foam cell insert compresses to compensate for oil expansion which maintains consistent Max performance throughout the operating temperature range of the shock. The foam cell design also eliminates air inside the shock which allows for mounting in any direction. Arc welded end mounts and select specific