Upper A-Arm Spacer 1/4in

The QUICKCAR RACING PRODUCTS Upper A-Arm Spacer 1/4in (Part No. 56-122) is a precision aluminum shim designed to fine-tune suspension geometry in racing and high-performance automotive applications. This 1/4-inch spacer fits upper control arms with 6-inch center spacing, allowing technicians to adjust castor, camber, and kingpin inclination without replacing entire suspension components—a critical capability for competitors dialing in track geometry under strict time constraints.

Manufactured from aluminum, the spacer weighs just 0.15 lbs and measures 7 inches long with a 0.5-inch thickness, making it easy to integrate into existing suspension assemblies. The 1/4-inch thickness increment provides the granular adjustment range necessary for dial-in work on circle track, road course, and drag racing platforms where suspension setup sensitivity directly impacts lap times and vehicle stability. Aluminum construction offers corrosion resistance in outdoor shop environments while maintaining the rigidity required for consistent alignment control.

This spacer is essential for racers and suspension technicians who need to incrementally modify upper control arm angles without committing to permanent modifications. Whether adjusting for track surface changes, seasonal setups, or fine-tuning after baseline testing, the 1/4-inch upper A-arm spacer delivers the precision and repeatability that competitive motorsports demands. Compatible with vehicles using 6-inch center-spacing control arms, it's a compact yet effective tool for serious suspension work.

Upper control arm shims like this one are standard in racing garages and suspension shops across oval track and road course programs. The ability to stack spacers or use individual shims allows mechanics to achieve the specific geometry changes required without expensive custom fabrication, making incremental suspension geometry adjustments accessible and cost-effective for competitive teams operating under budget constraints.