Revolution Gear and Axle, Replacement series, Rear axle shaft for Jeep D44, 85-92 Comanche MJ, 84-96 Cherokee XJ and 97-06 Wrangler TJ w/D44, Left Hand, 29.2 Inch 30 Spline (OE# 75786-2X / Hollander# 447-2717). Revolution replacement series axles are made from 1541H Steel and utilize a state of the art computer controlled heat treated process. The use of better material and better heat treating process gives our replacement axles a 10 Percent increase over the OEM axles.