SPC Performance 15629 X-Axis Sealed Flex Joint

The SPC Performance 15629 xAxis Sealed Flex Joint is an advanced cross axis ball joint engineered as a performance upgrade over traditional suspension bushings and linkage joints. Designed to replace many OE-style bushings, the xAxis platform delivers measurably better performance across three key dimensions: reduced compliance and deflection compared to rubber and polyurethane joints, improved durability over spherical bearings and poly-style bushings, and greater articulation than urethane alternatives — making it the ideal choice for race builders, fabricators, and serious street performance applications.

This specific unit features a 12mm inner diameter (bolt size), 45mm width, and 40mm outer diameter, with 19° of articulation to handle demanding alignment and suspension geometries. The ball itself receives an electroless-nickel plating for a hard, smooth wear surface that maximizes long-term durability. The corrosion-resistant nylon race reduces compliance and deflection, while zinc-plated retaining rings secure the easily replaceable rubber boots through the full range of joint articulation.

Key Features:

• 12mm I.D. x 45mm Width x 40mm O.D. — fits a wide range of custom link and arm applications
• 19° of articulation — accommodates demanding suspension geometries
• Electroless-nickel plated ball — hard, smooth surface for maximum wear resistance and longevity
• Corrosion-resistant nylon race — reduces compliance and deflection versus rubber and poly joints
• Sealed ends with rubber boots — retains grease and excludes contaminants for extended service life
• Zinc-plated retaining rings — secure easily replaceable boots through full articulation range
• Suitable for use as a direct OE bushing replacement or as a drop-in upgrade for the Nissan 350Z Rear Camber Arm (SPC part #72050)
• Ideal for race, off-road, and high-performance street builds

Build a custom suspension link from scratch or upgrade an existing arm with the SPC Performance xAxis Sealed Flex Joint — precision-engineered to meet the most demanding performance and durability requirements.