UMI boxed rear lower control arms for 1959–1964 GM B-Body classics replace rust-prone stamped steel with .120" wall rectangular tubing, CNC-machined bushing holders and MIG-welded end caps. Grease-able polyurethane bushings reduce deflection and wheel hop, improving ride quality and traction while retaining correct spring perches for factory springs. A Grade 8 hardware kit is available separately for installation.
UMI Performance 59-64 GM B-Body Rear Lower Control Arms/Trailing Arms