Maxorber Front Set 2 Pieces Shock Struts Absorber Compatible with 2007-2013 Chevrolet Silverado 1500 GMC Sierra 1500 2WD & 4WD 341493 Compatible with 2007 2008 2009 2010 2011 2012 2013 Chevrolet Silverado 1500 GMC Sierra 1500 2WD & 4WD Front Set 2 Pieces Shocks and Struts Front Pair 2007 2008 2009 2010 2011 2012 2013 Chevrolet Silverado 1500 GMC Sierra 1500 2WD & 4WD Shock Absorber Shock Absorbers compatible with Left H (Driver Side) and Right H (Passenger Side); Shock Absorbers only,not including springs or mounts. Chromed Piston Rod: suitable stiff dampening power compatible with passenger cars Shocks Struts replacement to restore your vehicle ride, handling and control performance. Premium Qualified Finish: rust protection; Nitrogen Gas charged: improved stopping,steering,stability Japanese Made Oil Seals: no squeaking noise,long durability; Chromed Piston Rod: suitable stiff dampening power compatible with passenger cars No refurbished parts! We do not sell any re-manufactured or refurbished parts, factory direct! Hard chromed piston rod, microcracks chromed surface processes and ultra-precision vertical polishing, to ensure smooth contact between the piston rod and seal. High quality Japanese made oil seals,to reduce friction between the piston rod and seal, multi-lip oil seal design to isolate external grime. High performance shock absorber oil, with high performance of anti-foam and anti-shear, reduce the internal wear. Pressurized N2 gas, to reduce foaming and aerating, to ensure product better performance. Seamless cylinder &amp; sleeves to reduce the possibility of spiltting, to ensure close contact between the piston and cylinder,no leaks,to obtain stable damping force. Buckle holes are consistent with the original car in situ, without any changes,easy and quick installation.