Protwin

What is the Protwin Challenge:

If you like the twin big noisy engine, you'd like the french protwin challenge!!!

-Historique:

Created in October 1980 at Daytona, especially for Harley Davidson. This challenge has been in France since 1987.

-Technology: you can do anything excepted using titanium for the mainframe. For the engine, you can do many things, there's no law,but the engine must have mini 560 cm3. You can modify the engine, the injection system, the mainframe, the wheels, and after that you test it on tracks !