Moog CC611 Coil Spring Set Variable rate coil springs maintain proper chassis ride height and smooth ride Ideal for family transportation, work trucks and sales fleet vehicles Powder-coated to protect against corrosion Worn or sagging coil springs can cause premature tire wear due to vehicle misalignment Fits select 1971 - 1992 GM vehicles Spring size: Inside Diameter 5.53", Bar Diameter .656", Installed Height 11.5" Load rating: 900 lbs. Pigtail ends All coil springs meet or exceed OEM (original equipment manufacturers) standards