Sonnax T3-3-5431HP forged chromoly performance slip yoke is an excellent upgrade over factory-style transfer case yokes, adding strength and durability at an affordable price. T3-3-5431HP uses 1350 series u-joints for transmissions with 31-spline output BorgWarner transfer cases. These high performance slip yokes deliver superior strength and durability for high horsepower and torque capacity applications, from street car, to street rod, drag strip, to dirt oval track.