Rilsan-coated, configuration 16C square-cut spline, developed to overcome torque lock, which prevents sliding movement of the shaft when major torque is applied and rear axle movment with the suspension.
Torque lock puts excess pressure on the gearbox and differential bearings. Wider angular movement of forgings prevents fouling of components on differential joint (required if axle nose dip).
High specification universal joints are 15% higher capacity than standard units with double seals and internal thrust plates to cushion end thrust. Tube wall specifications increase giving 20% more capacity.
Recommended for rallying and racing.