UMI Performance 99-04 Ford Mustang Upper & Lower Rear Control Arms Kit

The product description includes a complete kit with UMI Performance adjustable lower control arms and fixed length non-adjustable upper control arms. These direct bolt-on replacements are designed to minimize wheel hop, improve cornering, lower ET's, and enhance track consistency. The lower control arms are constructed from DOM mild steel tubing with a 4130 chrome-moly threaded tube adaptor, CNC machined, and TIG welded for exceptional strength. The spherical rod end allows for bind-free operation, while polyurethane bushings provide a quiet and comfortable ride. The upper control arms feature mild steel mounting points, DOM steel tubing, and polyurethane bushings. Both control arms include polyurethane bushings, zinc-plated steel sleeves, and greaseable zerk grease fittings for easy maintenance. Adjustments can be made using high-quality QA1 Teflon lined spherical rod ends for quiet performance. Additionally, the lower control arms feature reinforced spring perches and heavy-duty sway bar mounting points. Installation is easy with bolt-on installation that does not require drilling and uses OEM hardware.

Additional Information

Complete UMI kit with adjustable lower and fixed upper control arms. DOM steel, TIG welded, chrome-moly adapters, and Teflon-lined rod ends for strength and smooth performance. Poly bushings, easy bolt-on install, no drilling required.

• 4130 chrome-moly threaded tube adaptor
• CNC machined and fully TIG welded for strength
• Direct bolt-on replacements
• Easy bolt-on installation in about 1 hour
• High Quality polyurethane bushings
• High quality Teflon lined spherical rod end
• Improve cornering
• Lower control arms constructed with DOM mild steel tubing
• Lower ET's and help track consistency
• Minimize wheel hop
• Polyurethane bushings for quiet operation
• Reinforced spring perches and heavy duty sway bar mounting points
• Set of fixed length non-adjustable upper control arms
• Set of UMI Performance adjustable lower control arms
• Spherical rod end for bind-free operation
• Upper control arms feature mild steel mounting points
• Uses OEM hardware
• Zinc plated steel sleeves

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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