Whiteline KTA204 Adjustable Rear Upper Control Arm for 2005-2010 Ford Mustang

Fits 2005-2010 Ford Mustang (Base, GT, Bullitt, and Shelby GT/GT500).

The S197 chassis third-link setup is prone to brake hop and axle tramp during performance driving due to the high compliance of the factory rubber bushings. The Whiteline KTA204 Adjustable Rear Upper Control Arm addresses these deficiencies by utilizing a longer arm geometry—similar to the 2011 Ford update—to stabilize the rear end and reduce hop. This arm is engineered to optimize the vehicle's pinion angle, minimizing driveline vibration and ensuring power is effectively delivered to the wheels.

Constructed from 4130 Chromoly for maximum rigidity, this arm features a synthetic elastomer bushing that provides the stability of a spherical bearing without the associated NVH (noise, vibration, and harshness). The eccentric crush tube design allows for precise pinion angle and instant center adjustment without the structural compromise often found in turnbuckle-style arms. For improved articulation, the bushing includes a pinhole voiding feature that prevents binding throughout the suspension cycle.

• Manufacturer Part Number: KTA204
• Material: 4130 Chromoly steel construction
• Bushings: Low-compliance synthetic elastomer with pinhole voiding
• Adjustability: Eccentric crush tube for pinion angle and instant center tuning
• Finish: Heavy-duty protective plating and powder coating for superior corrosion resistance
• Installation: Includes heavy-duty mount and detailed installation guide