Ball Joint Upper Scrw-In

The Ball Joint Upper Screw-In from Allstar Performance is an essential suspension component for serious fabricators, performance enthusiasts, and mechanics who demand adjustability and precision in their vehicle builds. Upper ball joints are critical pivot points connecting the steering knuckle to the control arm, bearing the vehicle's weight while enabling steering articulation. The screw-in design of this unit allows for threaded adjustment, making it ideal for custom suspension geometries, race car setups, and street machines where camber, caster, or ride height tuning requires fine-tuned ball joint positioning.

This screw-in ball joint leverages Allstar Performance's engineering expertise to deliver reliable load-bearing capability and durability under demanding conditions. The threaded interface enables vertical adjustment without removing the entire control arm assembly—a significant advantage during suspension geometry setup or replacement without full disassembly. The compact design measures 5.5 x 2.2 x 9.05 inches and weighs just 1.4 lbs, making it practical for installation in tight engine bay environments common in modified vehicles. The precision-machined construction ensures smooth articulation and minimal play, critical for maintaining accurate steering response and suspension geometry across acceleration, braking, and cornering loads.

This ball joint serves mechanics and fabricators working on vintage hot rods, modern performance builds, and competition vehicles where suspension tuning is non-negotiable. It's particularly valuable for bracket racers, drag racing platforms, and street machine builds where adjustable geometry optimizes weight transfer and tire contact patch during hard acceleration. Before installation, verify compatibility with your specific control arm design and vehicle platform, as ball joint sizing and threading specifications vary across applications. Proper installation requires checking wheel alignment after fitting to ensure camber and caster values match your suspension's intended geometry and performance parameters.