RideTech offers these 2.5" Dropped Spindles for 1963-70 Chevy and GMC C10 and C15 pickup trucks. They are sold in pairs with caliper brackets and works with stock HD Brakes with 1-1/4" thick rotors and most aftermarket brakes. These spindles are precision cast from high quality Ductile Iron, with 4140 Chrome moly CNC machined pins.