From the many builders at his previous company, Zack selected the best 11 builders. He then cut those 11 down to just the top five. With a team made of truly “the best of the best,” Gearstar became one of the first companies to manufacture high performance automatic transmissions to the specifications of the engines, horsepower and torque output, rear gear ratio and the application which it is to serve.To maintain consistency and quality during the building process, each transmission is handled by a single builder. We are also employee owned by people that have a true passion for what they do. Unlike many other transmission manufacturers that have been bought and sold three or four times over, Gearstar has only ever had one owner.