The Modular™ Drop Spindle is a one-piece forged nodular iron design with pressed in alloy steel axle pin; installs with no modifications; lowers your vehicle 2-1/2. In some cases this is accomplished without moving the wheels out! On a factory disc brake equipped truck the spindles will move the offset in almost 1/2. Fits 3/4-Ton 2WD models.Important: Requires A5540306 disc brake brackets. For use when converting 3/4 ton brakes to Heavy Duty 1/2 ton brakes.Note: Brackets are for use with stock heavy duty 1-1/4 rotors and factory D-52 calipers (large calipers)Click for installation Instructions.{specs}.