Adjustability is crucial when tuning your street car's suspension. Our on-car adjustable upper control arms for the rear of your GM vehicle are the ultimate solution. Constructed from aircraft quality 4140 chrome moly steel with TIG welded construction, these arms are durable and reliable. The upper control arm mounting points feature CNC machined 0.250" mild steel, 4140 chrome moly tube adaptors, and a high strength 4140 chrome moly heat treated 1.000" solid adjuster.
Our Ultimate Arms allow for easy pinion angle adjustments with on-car adjustability. Simply loosen two jam nuts and turn the adjuster to quickly lengthen or shorten the arms for optimal performance. The Teflon lined spherical rod end design prevents binding, making these arms ideal for both track and auto cross use.