The Yukon USA Standard 4340 chromoly axle kit is a direct-replacement front axle set for 1971–1977 Ford Bronco applications with a Dana 44. Forged from high-tensile 4340 chromoly and heat-treated for toughness, the kit includes a 30-spline 18.31" inner LH, 30-spline 27.94" inner RH, 19-spline 9.72" outer axles and Yukon Super Joints for strengthened connections.
USA Standard 4340 Chrome-Moly Replacement Axle Kit For 71-77 Ford Bronco / Dana 44 w/Super Joints