IMSA PROTOTYPE CHALLENGE THE CLASSES
IMSA Prototype Challenge enters its 15th season of competition in 2020. The series provides thrilling action and grooms drivers for future Prototype competition in the IMSA WeatherTech SportsCar Championship.
Racing is divided between the LMP3 class with an AM sub-class made up of cars containing only bronze-rated drivers. Both classes utilize identically specified equipment. There are currently 4 different chassis eligible for competition