Two half torsion axles (adjustable),

Two half torsion axles (adjustable), 425 lbs capacity. I bought the lightest capacity they had because I didn’t want the suspension to end up being to stiff. I bought them online from 

Southwest Wheel in Dallas. (Dang, I should have had Earl run by there to pick them up). The two of them cost $225. You might be able to get them locally from a trailer dealer a little cheaper. I think Northern Tool also sells them.