Upper Control Arm

Harness the power of your new Ford Mustang with a UMI Performance P/N 1066 adjustable rear upper control arm. Upgrade from the flimsy, factory rubber bushing setup to improve responsiveness and reduce wheel hop upon launching. The robust bracket is constructed from CNC machined 0.250” thick mild steel and reinforced with three-hole gussets for incredible strength. The 4140 CrMo adjustment boss and hex adjuster is built in-house so we can control the quality. Premium rod ends allow for smooth articulation without the binding associated with the factory rubber bushings. The P/N 1066, with its on-car adjustability, allows you to easily set pinion angle for drag racing applications or correct pinion angle to compensate for vehicle lowering. The beautiful red or black powder coated P/N 1066 uses factory hardware which allows you to bolt them on and go. Proudly designed and fabricated in Philipsburg, PA – USA.

Additional Information

Upgrade your Mustang with UMI’s P/N 1066 rear upper control arm. Improve traction, reduce wheel hop, and set pinion angle with on-car adjustability. Built tough with CrMo steel and premium rod ends. Made in the USA.

• 0.250” thick mild steel bracket
• 4140 chromoly hex adjuster, heat treated, and made in-house
• CNC machined and TIG welded to bracket
• CNC machined Chromoly adjustment boss
• Designed and fabricated with pride in Philipsburg, PA – USA
• On-car adjustable with a strong, race-quality Teflon lined rod end
• Premium quality red or black powder coat
• Tapered aluminum rod-end adapters made in-house

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information