This is from the instructions on install of this kit from BDS, and the bar when assembled and at it's shortest point should measure appoximately 59 3/4".
"Measure the length of the bar from the center of the bolt at the axle to the center of the sleeve at the traction bar slider end (02869). The
length should be approximately 59-3/4” +/- 0.25”. If not, press firmly on the traction bar slider end to seat the springs."