Flange To Center Of U-Joint USA Standard GearUSA Standard Gear driveshafts are built new from the ground up, not remanufactured, to provide decades of reliable use. Many components are upgraded from OEM to eliminate known issues. Length: 38. 5 flange to center of u joint, collapsed Length: 41. 25+ flange to center of u joint, extended 1350 double cardan at the transfer case 1350 u joint at the front differential New universal joints, slip yokes, shafts and components ensure a long life All units