72" from Hubface to Hubface and 58" Spring Center to Spring Center. Springs are 25 1/4" long and 1 3/4" wide. 4 Leaf Springs 2-3/8" Main Tube 5 Lug with a 4 1/2" bolt pattern. 1/2 lug studs. Please note that axles have a positive camber bow to help with tire alignment under load.