UMI Performance · New
UMI Performance 59-64 GM B-Body Rear Lower Control Arms/Trailing Arms
MPN 3650-R · Store SKU umi3650-R
Supplier stock checked 11/7/2026, 6:00:02 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
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. Boxed control arms boost traction, ride quality, and durability.
Manufacturer fitment & guides
Check 3650-R against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
