By Father and son Mark and Dominic Herbertson are competing against each other in this years lightweight TT race. Mark Herbertson has being competed at the TT now for a couple of years and is a hugely experienced rider who has lapped at the TT at over 118 mph. Dominic Herbertson meanwhile made his road racing debut at the 2013 Manx Grand Prix recording a superb 6th place finish in newcomers B race.
