Diff outdrives for XRAY Active Diff of self-developed, world-renowned HUDY Spring metal the most challenging steel item available are CNC-machined on accuracy German long-turn devices. The diff outdrives are ground and strategically lightened to reduce rotating fat. The diff outdrives are then further hardened to make sure optimum energy and longest lifespan. The diff outdrive shafts are additionally accuracy hand-ground to a really high threshold to make sure an ultra-smooth tight effortlessly squeeze to your diff human body and diff gear. Band of 2.