Ultimate U-Joint The Spidertrax Ultimate U-Joint redefines off-road durability and performance. Equipped with high-quality bearings, it delivers smoother operation and greatly extends maintenance intervals, ensuring uncompromising longevity. No more premature wear - just reliable performance, even in the harshest terrains. At the core of these u-joints lies a substantial 1.125-inch trunnion diameter, offering unparalleled strength and resilience.Each Ultimate U-Joint comes complete with a central body with needle bearings (pre-installed) , 4 trunnions, and 2 caps with snap rings and o-rings. Comparable to a 1480 series u-joint but with enhanced dimensions all around, our Ultimate U-joint boasts a larger outer diameter, ear-to-ear measurements, and trunnion size, ensuring superior performance in every aspect.Proudly made in the USA. Whether you are using our Ultimate or Pro Series Knuckles, our Ultimate U-Joint seamlessly integrates for a perfect fit. Upgrade your off-road experience with the Spidertrax Ultimate U-Joint and Axle Shafts - where durability, performance, and innovation come together for an unparalleled driving experience. Overview Bearings vs Steel on Steel Gone are the days of premature wear with our bearing-equipped axle u-joint. This design ensures longevity and smooth operation in even in the toughest terrains. Reinforced Yoke Ears Strengthened yoke ears mean enhanced durability. Center locking trunnions securely hold the yoke ears in place, preventing spreading in high torque situations. Larger Trunnion Diameter Boasting an impressive 1.125" diameter, the Ultimate U-Joint offers unparalleled strength and reliability. The teardrop shape of the cap also ensures that caps can not spin. Optimized Steering Our unique trunnion pin design enables a thicker cross-section yoke year while maintaining a 50-degree steering angle, ensuring precision handling in any terrain.