Universal Joint 5/8" I.D 2-1/2" Long, Military Specification

These universal joints are manufactured to military specifications for aircraft and have become the select choice of drag racers due to the lightweight design. Lubricant-filled silicone boot provides maintenance-free operation for extended universal joint life. This boot is designed for high temperature environments with a continuous rating of 340°C. NOTE: Total Vehicle and driver weight not to exceed 1590 kg. Not for circle track, street or highway use.