After successful years of research and development, ARB is excited to release a competition edition 35 spline Ford 9″ Air Locker. Engineered and manufactured in Australia, the RD99CE competition Air Locker has been designed around the requirements of top-flight Ultra4 racing. Each technical advancement addresses a specific concern from teams competing in the worlds toughest 4×4 events and is a direct result of testing within these same races. This Air Locker is for the top-tier racer or the hardcore enthusiast who demands the best equipment for their vehicles. Everyone can benefit from the research and development ARB has committed to the competitive racing circuits.