Transmission / gears primary (13/33) competition TOP RACING long PIAGGIO VESPINO, VELOFAX 50

Ideal for accompanying a PIAGGIO VELOFAX or VESPINO 50cc equipped with a pot and a large diameter kit, this TOP RACING elongated primary transmission allows a top speed gain of 15 to 20km / h. Only ask on mopeds equipped with kit and pot! Otherwise the engine can not pull this transmission.