A-Arm Spacer Kit 1/16in -1/2in thick

The A-Arm Spacer Kit 1/16in–1/2in thick from JOES Racing Products delivers precision adjustability for suspension geometry tuning on high-performance vehicles and race cars. Control arm shims are essential when fine-tuning chassis alignment, camber curves, and suspension kinematics—particularly in competitive environments where hundredths of an inch affect handling balance and tire wear patterns. This kit supplies multiple shim thicknesses, allowing mechanics and fabricators to stack and customize ride height and geometry without replacing entire suspension components.

Manufactured from aluminum with a natural finish, these upper control arm shims feature a 6-inch center spacing design that integrates with OEM and aftermarket A-arm mounting points. The layered shim approach—ranging from 1/32 inch to 1/2 inch thicknesses—enables incremental geometry adjustments without welding or permanent modification, making them reversible and ideal for setup experimentation during testing sessions. Aluminum construction keeps unsprung mass minimal while maintaining rigidity, and the precision machining ensures consistent fitment across multiple adjustment iterations without binding or shifting under cornering loads.

Race teams, weekend warriors, and suspension specialists benefit most from this kit when optimizing front-end geometry for road course, autocross, or drag racing applications. Installation is straightforward—stack shims between the control arm and chassis mounting points, then torque to specification—making it accessible for DIY builds and professional shops alike. The comprehensive range of included thicknesses minimizes the need for multiple kit purchases, and the compact package (3.05 × 1.15 × 10.1 inches, 0.41 lbs) stores easily in any garage or trailer toolbox for trackside adjustments.