UMI Performance 3037-R Roto-Joint Adjustable Rear Upper Control Arms

UMI Performance's 3037-R Roto-Joint Adjustable Rear Upper Control Arms are a premium suspension upgrade engineered for street, strip, and pro-touring applications. Built to eliminate suspension deflection and improve overall handling precision, these arms deliver a noticeable upgrade over factory units in both feel and durability.

Key Features:

• UMI-designed Roto-Joint spherical bearings drastically reduce suspension deflection for crisp, responsive handling
• On-car adjustment — pinion angle and length can be tuned while the arm remains bolted to the vehicle
• UMI-designed and in-house machined CrMo (chromoly) adjuster for maximum strength and durability
• CrMo threaded adapters provide superior thread strength over standard steel
• 3/8" thick CNC laser-cut upper mounting pads for precise fitment and rigidity
• Heavy-duty construction using a combination of TIG and MIG welding
• Durable powder coat finish in red for long-lasting corrosion resistance
• Compatible with all rear end housings — a true bolt-in replacement
• Proudly made in Philipsburg, PA, USA

The Roto-Joint design minimizes unwanted suspension flex, allowing for precise pinion angle tuning and significantly reduced wheel hop under hard acceleration. Whether you're carving corners on a pro-touring build or launching hard at the strip, these upper control arms are engineered to handle virtually any demand.

Installation: Installs in approximately 1–2 hours using basic hand tools. Designed as a direct bolt-in replacement requiring no cutting or welding.