They are 2.5 inches wide, the center pen is exactly in the center which is I believe 22.5". I saw a Taco that moved the spring hanger forward and made a cool shackle hanger for it... Oh yeah they were Rubicon Express's 1.5" springs, part number RE1445.
It flexed like this... Oh yeah thats a 4 foot tall pole... Hey look you can see Blackdog and Ruger in the background...