UMI Performance · New
UMI Performance 65-67 GM A-Body Adjustable Upper Control Arms- Poly Bushings
MPN 402600-B · Store SKU umi402600-B
Supplier stock checked 11/7/2026, 2:42:14 PM 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 adjustable upper control arms are designed to optimize your vehicle's pinion angle for superior performance, precise handling, and increased traction. These control arms are made of high-quality materials, including CNC machined 0.250" steel mounting plates, 4140 chrome moly threaded tube adapters, and a 4140 chrome moly 1.000" solid adjuster. One unique feature of UMI Performance's adjustable upper control arms is the on-car adjuster, which allows for easy adjustments without the need to remove or unbolt the control arm from the vehicle. Adjusting your pinion angle is essential for improving your track times, enhancing traction, and minimizing wheel hop. These control arms also come with grease-able fluted polyurethane bushings, new rear end housing bushings, and a durable gloss powder coat finish for long-lasting performance and reliability. Upgrade your vehicle with UMI Performance adjustable upper control arms for optimal performance and improved handling. UMI Performance adjustable upper control arms feature on-car adjusters, CNC machined steel, 4140 chrome moly components, and polyurethane bushings. They improve pinion angle, traction, and handling while reducing wheel hop. UMI adjustable upper control arms: optimize pinion angle and handling.
Manufacturer fitment & guides
Check 402600-B against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
