Torsion bar cross member 22" center to center on the arms. Arms are 1/4" 4130 cm, ends can be drilled or slotted to suite your needs. the torsion bar is 3/4" hex 4140 chromoly steel. the arms are held in with 1/8" 4130 end plates and three 5/16" bolts that can be tightened to suite your needs.  The center adjuster has two clamp bolts to adjust ride height if needed.