Control Arm Shim .125in Dual Mount

The Control Arm Shim .125in Dual Mount by Allstar Performance is a precision suspension component engineered for racers and serious performance enthusiasts who demand precise alignment geometry. This shim addresses the critical need for fine-tuning control arm angles during suspension setup, whether you're dialing in a street car, drag racing platform, or road course competitor. By allowing exact vertical adjustment, it eliminates guesswork during alignment and geometry correction—a must-have for anyone serious about handling consistency and tire wear optimization.

This dual-mount shim measures 0.125 inches in thickness and features a compact footprint (4 x 0.3 x 12.05 inches) designed to slip between the control arm and frame or spindle mounting points without requiring component removal. The dual-mount design accommodates both upper and lower control arm applications, making it versatile across various suspension platforms. At just 0.13 lbs, it's engineered to add negligible unsprung weight while providing the rigidity needed to maintain alignment under cornering loads and acceleration stress.

Fabricators, suspension specialists, and performance shops rely on Allstar Performance shims during alignment work to correct camber, caster, and control arm angle without expensive component replacement or welding modifications. This shim is ideal for applications ranging from drag racing setups where squat characteristics matter, to circle track racing where consistent geometry prevents tire push or loose conditions. Confirm mounting bolt diameter and control arm configuration against your specific vehicle platform before installation—proper fitment ensures alignment accuracy and suspension stability.