Fitment： for Chevrolet C10 1973-1987 for GMC C15 1973-1987 for GMC Jimmy 1973-1987 for Chevrolet K5 1973-1987 Specification： Product Type: Lowering Spring Kit Material: Steel Finish: Powder Coated Spring Rate: 1120lb/in = 20kg/mm Spring Length: 280mm/11.02" Spring Tensile Strength：1500-1700MPA Drop Height: Front：3" Rear：5" Package Content： 3" / 5" Drop Lowering Coil Springs & Flip Kit .
