Our upper and lower trailing arms work together to positively locate and control the rear axle. The adjustable upper trailing arms allow for pinion angle adjustments. Launches are quicker, smoother and more consistent by reducing wheel hop. Cornering and overall stability are dramatically improved through increased roll stiffness and sway bar effectiveness. The fabricated trailing arms are constructed from high quality, TIG welded, .120" wall steel tubing. They feature our exclusive billet CNC machined spring perch and are fitted with special fluted polyurethane bushings. Grade 8 Hardware is included with suspension packages.