The speediest, smoothest, best handling, finest performing aluminum race bike on the planet. CAAD13 is the ultimate alloy race machine with exceptional efficiency and superb handling. Features Ultralight SmartForm C1 Premium Alloy Frame with full carbon fork, Shimano 105 Di2 electronic shifting & hydraulic disc brakes, HollowGram 27 SL carbon seatpost, and DT Swiss R470 wheels.