Precision engineered with G-Force technology for the ultimate in safety and performance, Working tube made of SteelPro™ alloy steel to provide superior strength, toughness and impact resistance while maintaining unmatched ductility, Surface-treated provides abrasive and contaminant protection while preventing rust, Piston rods made of S45C medium carbon steel for precision and wear resistance. Hard chrome plating process ensure extended durability of the rod, Reinforced piston provides optimal tube pressure control and resistance for increase ride quality, OE fluid contains special additives to perform among extreme temperatures and helps reduce oil breakdown, Professional grade fluid seal reduces excessive friction and increase longevity by preventing premature leaks, Nitrogen gas charge maintains road contact for enhanced ride and handling by reducing aeration and shock fade, Kit Includes: 2x Rear Shock Absorber (Both Side)