Our Back Half Frame Kit is designed to allow TJ, LJ, and YJ owners to get rid of the clunky back half of their stock frame to allow clearance for coilovers and/or larger heavy duty axles. By narrowing the frame, you are able to run coilovers without notching your factory frame and weakening it. Plus since it doesn't hang as low as the factory frame in the back, you can do a stretch with that one-ton axle and have better up-travel. This DIY kit includes only the transition pieces because we know you can get straight pieces of 2"x3" tube locally, so why make you pay for that AND shipping for it. But these aren't just some generic pieces of steel that make the transition. This kit has been specifically designed to compliment the factory frame, yet look distinctly hardcore. It is also engineered for maximum strength and easy assembly with jig and key holes so you can't put it together wrong. Just another example of the FUSION OF FORM AND FUNCTION from Artec. This product ships in approximately 1 days