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, Premium hardened mount following OE spec for easy installation. SAE-Grade bolt and nuts, Part Reference Numbers : DG342476 342476 342572 58930 61675 77953 77975 81930 G63866 G64101 3450006 5550009 555054 565103 565125 KG54341 344384 345073 32345 32348 33233 34692 34694 37166 911168 911166 911506 V37166 251400 256010