Enhance your Polaris Pro R/Turbo R's suspension with our precision-engineered Lower Spindle Pin replacement. Crafted from robust 17-4 Stainless Steel, it guarantees durability and optimal performance. Maintaining the exact pivot point of the stock ball joint ensures consistent geometry and predictable handling. This spindle pin is compatible with other aftermarket arms using joints or uniballs, specifically the FK WSSX14T uniball and JMX14T-770 rod end. With a thread change for increased strength and a 5/16" Grade 9 12pt bolt retaining the upper cap, installation is straightforward. Take your off-road adventures to the next level with confidence in your vehicle's performance and handling.