Our Differential Centering Kit is designed to relocate the front differential to the center to allow for improved performance and drivability from your Hummer and HMMWV. By relocating the diff. to the center, it allows the operator to carry only one spare as opposed to two front (unequal length) and one rear half shaft. The kit also alleviates the front left half shaft (short side) from binding under full articulation which can result in damage. This kit is also used on our 6-Piston Big Brake Kit. Our one piece construction allows for improved strength and quality over stock. A full kit including half shafts is also available.