Drop Spindle Sets feature an updated design with a lighter, cleaner casting that also moves each wheel 3/4" inboard to help retain factory track width and provide fender-to-tire clearance. Drop Spindles are the best way to lower the front of a truck without changing or affecting other components. Original ride quality and suspension geometry are retained. Drop Spindles are made for disc brakes. A disc brake system from a 1971-72 GM truck can be used. Drop Spindles can be used with Drop Coil Springs for an even lower ride.