Trek's Domane 4.5 soaks up road chatter and propels you farther and faster in top comfort. This full carbon road machine is graced with race-winning Trek technology like IsoSpeed and endurance geometry to make it a true ride-all-day rocket. It masters long, epic rides with ease while delivering unrivaled speed and bump compliance. The 4.5 rolls on a precision-shifting Shimano Ultegra drivetrain with compact gearing for easier climbing. Thru-axles front and rear give you serious stiffness, and the Shimano hydraulic discs deliver amazing stopping power. Plus, you get quality Bontrager components including aluminum wheels, bar and stem, and a carbon post. Uncompromisingly fast, confidently stable, sublimely comfortable, the Domane 4.5 Disc has it all!