From a press release issued by Team Electric Motorsport

Team Electric Motorsport, winners of the Isle of Man TTXGP Open Class, is now accepting resumes from competitive riders to compete in the eGrandPrix being held at Infineon Raceway May 14th-16th. Due to sensitive horsepower/weight ratio concerns, riders over 5′10″ tall and weighing over 160 pounds need not apply.

Source: RoadracingWorld.com