The active center diff outdrives are CNC-machined on precision German long-turn machines and are constructed from HUDY toughened steel. The diff outdrives come in addition ground and strategically lightened to cut back rotating weight. The diff outdrives are then further hardened to be sure optimum power and longest lifespan. The diff outdrive shafts come in addition precision hand-ground to an extremely high limit to make certain an ultra-smooth tight easily fit into the diff human anatomy and diff gear.