Trek Madone 5.2 frame is made of OCLV carbon 500 Series, with tapered headset and BB90 bottom bracket standard.
The tubes of the frame have aerodynamic named KVF (Kammtail Virtual Foil), also used for the fork with carbon dropouts. The cable passage is internal, standard the chain guide and the speed/cadence sensor Duo Trap. The derailleur is directly mounted to the frame's seat tube. The brakes are integrated in the structure of the frame and placed in the front of the fork and under the bottom bracket. The bike is then assembled with the Shimano Ultegra Group adopted for shifters, front and rear derailleur, crankset. The sprocket is Shimano 105, while the brakes are Bontrager. The stem and handlebar are Bontrager in aluminium, while the carbon seatpost is always Bontrager. The wheels are Bontrager Race with tires 700 x 23. The saddle is Bontrager too. Nine sizes available, two colours. Not including the pedals and the bottle cage. So assembled the bike weighs 7.4 Kg.