32" Chris Alston Ladder Bars

72DMag said

@yellow rose I guess every manufacturer does do them differently then. Chasis engineering measures to face of the axle. Link below

C/E3607 -32" Double Adjustable "Pro 1" Ladder Bar (pr.)

Click to expand...

They are the only ones doing it I know of. Because the suspension works around the centerline of the rear axle, the correct length is always from the centerline of the axle. By their measurements, that bar actually functions like a 33.5 inch bar.