axle size on 01 s-dime

so when measuring the axle for the bottom bag brackets on the basic bridge kit from suicide doors. when u measure the axle housing you get 8 inchs but they only ask you if you have 2.75", 3", 3.5" and 4" would it be 4" please help. circumfrence or radius

they are asking you for the axle housing tube dia., not the center section housing dia

that is what we measured only thing i could think of is it has to be half of that 4"

bump

the axle tube diameter man. 2.75 is what you want for an s10. If you need to angle any of the tabs (say for triangulated uppers) go a size bigger on those ones.

ahh thank you