The Radical SR10 Registry documents the unique history of each car by Chassis number. As a result Radical owners, buyers and sellers have a valuable resource to help understand what is special about each car.
Chassis Serial Number
Picture / Info Link
Radical SR10 chassis number 00 is the SR10 factory test car.
Radical SR10 Chassis number 4 is a black car with pink graphics. This is the car that was used for the North American Debut of the SR10 and it has traveled across the U.S. as the demonstration and press car.