The Yukon USA standard axle for 1977 and up Ford Bronco and F-150 is a 31-spline rear axle shaft measuring 32" long with a 5-lug pattern. Offered as a standard replacement, it matches the spline count and length specified for those vintage Ford truck and SUV applications and provides a direct-fit option where that shaft geometry is required.
USA Standard Axle For 77+ Ford Bronco & F-150. 31 Spline / 32in Long / 5 Lug