Originally intended for time trials track racing and the occasional tour de france174 prologue the super 9 also has become a favorite among ironman174 distance and 703 distance athletes its the wheel that marino van hoenacker chose en route to the fastest ironman race time ever at ironman174 austria the super 9 is the all around rocket that will outclass any other disc weve tested even with 23 mm tyres its hub features the stiff 17 mm axles of the 188 road hub along with adjust