Rear Suspension Assembly

A vehicle chassis with a first frame rail and a second frame rail. There is rear suspension with a first leaf spring and a second leaf spring each pivotally connected to the first and second frame rails, respectively. In some embodiments, the rear suspension includes a first shackle assembly connecting the first leaf spring with the first frame rail such that the first shackle straddles the first leaf spring, and a second shackle assembly similarly straddling the second leaf spring.