UMI Performance 59-64 GM B-Body Rear Lower Control Arms/Trailing Arms

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.

Additional Information

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.

• 0.120" wall thickness rectangular tubing construction
• Boxed control arm set
• CNC machined drawn over mandrel bushing holders
• Correct spring perches to accept factory spring
• Direct bolt-on replacement for stock stamped steel control arms
• Grease-able High Quality polyurethane bushings
• Improved ride quality and overall performance
• MIG welded end caps to keep out road debris
• Option to purchase new Grade 8 hardware kit for installation (excluding shock mount bolts)
• Reduce body roll and increase traction by eliminating wheel hop
• Reduce bushing deflection compared to stock rubber bushings

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	umi365001-R	UMI Performance 59-64 GM B-Body Rear Suspension Kit 3-Link- Chevy only - Red (1x umi3660-R, 1x umi3650-R, 1x umi3651-R, 1x umi3605, 1x umi3606, 1x umi3653-R, 1x umi3607)
	umi365002-R	UMI Performance 59-64 GM B-Body Rear Suspension Kit 4-Link- Chevy only - Red (2x umi3660-R, 1x umi3650-R, 2x umi3651-R, 1x umi3605, 2x umi3606, 1x umi3653-R, 1x umi3607)

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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