UMI Performance 3624-R Upper Control Arms with Spherical Roto-Joints

UMI Performance's 3624-R adjustable upper control arms are engineered to eliminate wheel hop, increase traction, and improve handling performance with a bolt-on installation. These control arms feature innovative on-car adjustability, allowing you to make pinion angle adjustments in your garage or at the track without removing the arms from the vehicle.

Key Features:

• Spherical Roto-Joints pre-installed for 28 degrees of unrestricted movement
• On-car adjustable using chromoly heat-treated adjuster for quick pinion angle changes
• 4140 chromoly threaded tube adaptors for maximum strength
• Mounting plates CNC machined from 0.250-inch thick mild steel
• Durable powder coat finish for corrosion resistance
• Uses OEM hardware for simplified installation
• Shipped fully assembled and ready to install

Roto-Joint Technology:

The installed spherical Roto-Joints utilize a greaseable delrin race design that provides superior performance over factory rubber and aftermarket polyurethane bushings. This design allows the suspension to articulate correctly while providing precision handling. The delrin race absorbs shock and road noise, delivering quiet operation on both street and track applications while maintaining a 100% streetable setup.

Adjustability Benefits:

Pinion angle adjustments are made simple by loosening two jam nuts and turning the chromoly adjuster to lengthen or shorten the control arm. As the length changes, the rear end rotates to adjust pinion angle. Proper pinion angle adjustment is crucial for lowering 60-foot times, increasing traction, and reducing wheel hop during hard acceleration.