UMI Performance control arms are an excellent upgrade for your classic B-Body, ideal for restoration projects, street cars, cruisers, or drag racers. These boxed control arms directly replace stock stamped steel versions, which can rust and weaken over time. The included grease-able polyurethane bushings enhance ride quality and reduce bushing deflection compared to stock rubber bushings, minimizing body roll, increasing traction, and eliminating wheel hop. Constructed with 0.120" wall thickness rectangular tubing, CNC machined drawn over mandrel bushing holders, and MIG welded end caps to block debris, these control arms also feature correct spring perches compatible with factory springs. UMI Performance offers a hardware kit for installation that includes all necessary Grade 8 hardware except shock mount bolts.
Upgrade your B-Body with UMI boxed control arms for better traction, ride quality, and strength. Made from 0.120" wall tubing with grease-able polyurethane bushings, they reduce deflection and wheel hop. Hardware kit sold separately.
Option to purchase new Grade 8 hardware kit for installation (excluding shock mount bolts)
UMI Performance 59-64 GM B-Body Rear Lower Control Arms/Trailing Arms
Boxed control arms boost traction, ride quality, and durability.
Direct bolt-on replacement for stock stamped steel control arms
Reduce body roll and increase traction by eliminating wheel hop
Reduce bushing deflection compared to stock rubber bushings
0.120" wall thickness rectangular tubing construction
CNC machined drawn over mandrel bushing holders
Correct spring perches to accept factory spring
Grease-able High Quality polyurethane bushings
Improved ride quality and overall performance
MIG welded end caps to keep out road debris
UMI- Boxed Control Arms
Boxed control arm set
Lower Control Arm
