Marianne Vos proved she was a force to be reckoned with one again, securing her sixth world cyclocross championship in Louisville, Kentucky. The 25-year-old Dutch powerhouse rode away from her competition aboard a Giant TCX Advanced SL.
The TCX Advanced SL has short seat stays that join the seat tube about a hand’s width below the top tube and is one of the few ’cross bikes still sporting a seatmast.
The Rabobank racer rides a size small frame. It has a 535mm effective top tube a relaxed head angle of 71°. Vos has a very aggressive position on her bike—notable for a 5-foot-6 female—with a staggering 10cm of saddle-to-handlebar drop. The fit does appear to be optimized for riding on the hoods; Vos also runs top-mounted brake levers.
No spacers here: vos’ stem is slammed and flipped to the -6° postion:Josh Patterson/Future Publishing
Vos’ aggressive fit suits her off-the-front racing style
Vos runs a 10-speed Shimano Dura-Ace Di2 group, which has proven itself reliable throughout frequent muddy races and subsequent power washings. Other notable components include ovalized Rotor chain rings. Vos is a firm believer in their effectiveness in eeking out every last possible watt from her pedal stroke; she uses them for ‘cross as well as on the road.
Vos runs rotor chainrings on her road and cyclocross bikes:Josh Patterson/Future Publishing
Rotor chain rings mounted to 172.5mm Dura-Ace crankarms propel Vos around the course
Like many other Shimano-sponsored ’cross racers Vos uses Shimano’s 35mm deep C35 carbon tubular wheels. She chose to run Dugast Typhoon tires for the frozen-yet-slowly-thawing world championship course.
Complete Bike Specifications
Frame: Giant TCX Advanced SL (Small)
Fork: Giant TCX carbon
Stem: PRO PLT, 110mm -6°
Handlebar: PRO Vibe Anatomic, 40cm (c-c)
Front brake: Giant/Rabobank team edition cantilever, carbon pads
Rear brake: Giant/Rabobank team edition cantilever, carbon pads
Shift/Brake levers: Shimano Dura-Ace Di2 Dual Control ST-7970
Auxiliary brake levers: Tektro RL721 cross top levers
Front derailleur: Shimano Dura-Ace Di2 FD-7970
Rear derailleur: Shimano Dura-Ace Di2 RD-7970
Cassette: Shimano Dura-Ace CS-7900, 12-27T
Chain: Shimano Dura-Ace CN-7901
Crankset: Shimano Dura-Ace FC-7950, 172.5mm, with Rotor 46/36 chainrings