These are on special til they are gone, they are fine but the new style are just a tad better, 16 left as of today... This is our Medium Weight Truss. This truss is designed to give you the torsional rigidity required to run a link setup well. We all see lots of tube style trusses in use but a tube dosen't address the twist introduced with torque input, tubes will make the axle stronger and give a place to mount your upper links but do little beyond that. Then there are the plate steel variations that are also great axle strengtheners and even better mounting points for links but again, do little about torsional twisting. Our truss designs incorporate a full torsion box for strength in every way others do but the box design also resists' the twist incurred with extreme torque input. No bolts to break or keep retightening, weld and walk away! It has a .25" shell thickness and a .375 baseplate thickness. This truss has a 5.5" clearance over the axle tubes and 16" clearance over the inside length. The Torsion box measures 1.75" X 3.5", a little bigger than a 2 x 4, about 200 times stronger! Some of the rear axles this will fit are Dana 44, Ford 8.8 & 9", and the Toy Mini. Some like the Dana 44 with 2.75" axle tubes will require minor grinding for the best fit. All can be adjusted to lower the 5.5" rise with a Plasma Cutter or Gas Torch in minutes if required.