UMI Performance Upper Control Arms with On-Car Adjustability

UMI Performance Upper Control Arms with On-Car Adjustability are adjustable rear upper control arms (also called upper trailing arms) built to let you set pinion angle for better handling and traction. They improve launch performance and cut wheel hop. The adjuster works while the arm is still on the car, so you don't have to unbolt or remove it.

Key Features:

• On-car adjustability: loosen the jam nuts and turn the adjuster to lengthen or shorten the arm without removing it from the vehicle
• 4140 chrome moly construction: threaded tube adapters and a heat-treated solid adjuster for strength and durability
• Precision fabrication: CNC-machined steel mounting plates and fully welded construction
• Greaseable bushings: polyurethane bushings, or spherical rod ends on select designs, for smooth articulation
• Durable powder coat finish: long-lasting protection against corrosion and wear

Pinion angle adjustment helps lower track times, increase traction and reduce unwanted wheel hop. These arms suit street, strip and performance driving. UMI Performance designs and builds its suspension components for durability and tuning flexibility. Hardware and finish options vary by item, so check the individual listings.