A-Arm 8.5in Screw In B/J Slotted Bearing

The JOES Racing Products A-Arm 8.5in Screw In Ball Joint Slotted Bearing is a precision-engineered tubular control arm designed for high-performance suspension systems in off-road racing and motorsport applications. This upper A-arm features an 8.5-inch length with a 10-degree geometry, engineered to deliver consistent front-end alignment and suspension geometry across demanding track and off-road conditions.

Constructed from aluminum and steel materials with black powder coat protection, this control arm uses a screw-in ball joint design with slotted bearing configuration. The slotted bearing style provides precise articulation and load distribution during suspension travel, critical for maintaining predictable handling characteristics over rough terrain or during aggressive cornering. The 10-degree included angle optimizes suspension kinematics for vehicles requiring specific geometry alignment—a specification that directly impacts ride height consistency, tire wear patterns, and overall vehicle stance. At 3.55 lbs, the component balances structural integrity with weight consciousness, important for vehicles where unsprung weight reduction contributes to ride quality and responsiveness.

This control arm serves serious off-road racers, desert racing competitors, and motorsport enthusiasts building or maintaining suspension systems that demand OEM or performance-grade components. Buyers typically replace worn ball joints, upgrade aging suspension geometry, or build complete front-end assemblies for vehicles competing in off-road racing series or high-speed backcountry driving. The screw-in ball joint design allows for independent replacement without retiring the entire A-arm, reducing long-term maintenance costs while preserving proven suspension geometry.

JOES Racing Products is recognized within the off-road and circle-track racing community for suspension and steering components built to withstand extreme loading and repetitive impact. When sourcing replacement A-arms or suspension upgrades, buyers should verify fitment compatibility with their vehicle's existing suspension mounting points and ensure the 8.5-inch length and 10-degree angle match their current setup or desired geometry changes.