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Spherical Bearing Rod End

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For the rear four-link, we used QA1 1x1 1/4-inch spherical bearing rod ends for the lower control links, and 3/4x7/8-inch ones for the top links. The QA1 rod ends feature a one-piece body that is more durable in heavy-duty applications such as dragging 1-ton axles over rocks. For the actual links, we used big 2-inch by 0.250-wall tubing for the lower ones that would be hitting rocks, and 1 1/2-inch by 0.375-wall for the upper links.