Maxorber New 4pcs Front & Rear Set Shocks Struts Absorber Compatible with 99-04 Ford Mustang Please Note: Full Set/Front and Rear Pair Shocks Struts would be shipped as 2 Packages, 1Pair in 1 Package Units, in order to protect the heavy shocks and packages. Please understand and wait a bit longer compatible with the second package.Please feel free to contact us anytime 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 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 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 splitting, to ensure close contact between the piston and cylinder, no leaks,to obtain stable damping force. Buckle holes are consistent with the car in situ, without any changes, easy and quick installation.