Designed to service top level Sport Compact racers in the USA, this set has swiftly proven its reliability and performance time and time again amongst elite level racers such as Tim Grey in the USA. Now an integral part of many teams' drivetrain the world over, this set has been a blessing for many that have persevered with unreliable competitor gearboxes over the past few years. Comes with optional aircraft aluminium centre brace attachment for added gear casing rigidity and strength. Crownwheel and Pinion is available as an option and customiseable by order.