Low Friction B/J Upper Bolt-In Metric GM +1in

The Low Friction B/J Upper Bolt-In Metric GM +1in from ALLSTAR PERFORMANCE is a precision suspension upgrade engineered for GM vehicles requiring improved steering response and reduced bind in the upper control arm assembly. This metric ball joint upper replacement is specifically designed for mechanics and enthusiasts building high-performance street cars, track vehicles, or restomods where OEM tolerances no longer meet performance demands. The +1 inch extension geometry compensates for suspension lift kits and modified chassis angles, making it essential when upgrading spring rates, lowering springs, or adjusting ride height on Chevrolet, GMC, and Pontiac platforms.

This bolt-in upper ball joint features a low-friction design that minimizes steering kickback and improves directional stability during aggressive cornering or on uneven road surfaces. The metric threading ensures compatibility with late-model GM suspension systems, while the precision-machined construction reduces play in the steering column and improves feedback through the steering wheel. The +1in dimensional offset allows proper alignment geometry restoration when paired with suspension modifications, preventing premature tire wear and maintaining correct caster and camber angles that directly impact handling balance and brake performance.

Technicians upgrading independent front suspension systems on second and third-generation Camaros, Firebirds, and modern Silverado/Sierra trucks will find this component indispensable for full-frame restoration work or suspension modernization projects. Installation requires basic suspension tools and alignment equipment; proper wheel alignment post-installation is critical to ensure the geometry benefits are fully realized. Weighing just 1.48 lbs per unit, this lightweight component integrates seamlessly into custom suspension builds without adding unsprung mass, making it ideal for both street and competition applications.