Upper Ball Joint +.500 Screw-In

The QA1 Upper Ball Joint +.500 Screw-In is a precision suspension component engineered for vehicles requiring heavy-duty articulation and durability under extreme conditions. Designed with a take-apart greasable construction, this ball joint serves law enforcement fleet managers, military logistics operators, and serious off-road enthusiasts who demand repeatable performance and straightforward field maintenance. Built to QA1's exacting standards, this upper ball joint delivers the kind of dependable geometry critical when suspension integrity directly impacts mission readiness or safety margins.

This screw-in upper ball joint features a 1.500-inch-per-foot taper, a 4.042-inch stud length, and a 1/2-20 thread specification that accommodates the +.500-inch extended length sizing for custom or lifted suspension geometries. The low-friction design minimizes bind and allows full range of motion without premature wear, while the greasable construction permits on-site lubrication without complete disassembly—a critical advantage in remote or austere operating environments. Hardware is included, eliminating sourcing delays and ensuring proper fastening specifications from install. The compact footprint (4 x 3.25 x 6.65 inches) and lightweight profile (1.69 lbs) make replacement and integration straightforward across platform variations.

Tactical and law enforcement personnel operating custom-built or heavily modified platforms benefit most from this component's precision fit and extended service intervals. The take-apart design enables field inspection without full suspension teardown, reducing downtime during maintenance windows. Installation requires standard hand tools and basic mechanical competency; verify your vehicle's upper control arm bore and thread size match the 1/2-20 specification before ordering to ensure proper fit and steering response characteristics.