Key Upper A-Frame

The HOWE Key Upper A-Frame Control Arm Caster Slug (MPN 22602) is a precision suspension component engineered for high-performance automotive applications requiring validated control arm geometry. This 1/2-inch ID centered slug is manufactured from steel with cadmium plating, delivering corrosion resistance and dimensional stability critical to maintaining suspension alignment under heavy load cycles. The compact 2.2 x 0.4 x 3.05-inch profile integrates seamlessly into HOWE upper control arm assemblies, supporting competitive racing platforms and precision chassis setups where suspension tuning demands exact geometric control.

The cadmium-plated steel construction provides superior corrosion resistance compared to uncoated alternatives, particularly in salt-exposed environments or high-humidity storage conditions. At 0.04 lbs, this caster slug adds negligible unsprung weight while maintaining the structural integrity required for suspension articulation. The centered hole design ensures precise wheel alignment geometry, preventing camber drift and reducing tire wear during extended driving cycles. This component functions as a locating element within the upper A-frame assembly, controlling caster angle and kingpin inclination—critical variables in steering response, tire longevity, and directional stability.

Technicians and suspension specialists working on HOWE-equipped vehicles—particularly road race, circle track, and off-road platforms—rely on validated OEM slugs to maintain the geometric specifications engineered into the control arm assembly. The 1/2-inch ID hole accommodates standard ball joint pivot fasteners, ensuring drop-in compatibility with OEM and aftermarket upper A-frame designs. Individual replacement slugs are essential for rebuilds, geometry correction, or component sourcing when original parts show wear or corrosion. For buyers restoring suspension systems to factory performance standards or building competition-grade chassis setups, this HOWE caster slug represents a verified, specification-correct component from a manufacturer trusted across American motorsports.