What is the difference between the three different types of differential balls?
Weight is the biggest difference. The Ceramic Nitride Pro Series are the lightest by far, then the HCCA ultralite, then the tungsten carbide. The lower the weight the lower the rotational mass meaning the higher the acceleration and top speed. Low weight differentials are critical for racing applications. Contrary to popular belief, Ceramic diff balls are actually more durable than even Tungsten Carbide, and they will not crack or break. So for racing purposes the Ceramic Nitride Pro Series differential balls are absolutely the best.