Detroit Speed Tubular Lower Control ArmsDetroit Speed's tubular lower control arms replace stock lower control arms on 1973 1977 A Body platforms. Features include a robust tubular design with gussets and cross brace, Delrin bushings with steel housings and crush tubes, and a black powder coat finish. The geometry features include additional positive caster and a stock location spring pocket. These new tubular lower control arms are shipped complete with lower ball joints, steering stops,