Many driveshaft components have been upgraded from OEM to eliminate known issues.
USA Standard Gear replacement drive-shafts are computer balanced to provide a smooth running, vibration free driving experience.. Compressed length of 50-7/8 measured from center to center of the furthest universal joint;1350 universal joint at the differential;double cardan CV with 4 bolt flange at transfer case;New universal joints, slip yokes, shafts and components ensure a long life;All units are dynamically balanced at 3,000+ RPMs for vibration-free driving;USA Standard Perfect Fit drive shafts are guaranteed for proper fitment and easy installation;USA Standard Driveshafts are strengthened over common OE shafts to prevent OE failure;Slip yokes and u-joints are lubricated with high temperature grease;Brand new and fully assembled for simple out-of-the-box replacement;California Residents: WARNING USA Standard Rear Drive Shaft - ZDS9110 USA Standard Drive Shafts are new and made from high grade steel to reduce the wear and tear of everyday use.