Julian Simon is a Spanish motorcycle racer who went on to win the 2009 125cc World Champion while racing for the Mapfre Aspar team.
Prior to winning the 125cc Championship, Simon spent 6 years racing in the 125cc class, as well as a single season in the 250cc class.
In 2010 Simon moved into the newely created Moto2 Class and finished 2nd in the Championship.
In recent years Simon has also had a spell in the World Superbike Championship. Airoh helmets used to have a Julian Simon replica helmet available on the market, but no new models have been released for a long time.