Specialized S-Works Roubaix SL4, Di2 Ultegra 11-spd, Carbon Road Bike-2015, 58cm Brand: Specialized Model: S-Works Roubaix SL4 Year: 2015 Frame Material: S-Works FACT 11r Carbon Type: Road Bike Weight: 16 lbs 1 oz Size: 58 cm Top Tube: 58 cm Seat Tube: 54 cm Stand Over: 81 cm Wheelset: HED Ardennes SL Shifters: Shimano Ultegra Di2 6870 Brakes: Shimano Ultegra 8000 Front Derailleur: Shimano Ultegra Di2 6870 Rear Derailleur: Shimano Ultegra Di2 6870 Crankset: FSA K-Force Light (172.5 mm) Chainrings: 50/34t Cassette: Shimano Ultegra, 11-speed: 11-30t Handlebar: Zipp AL (44 cm) Stem: FSA OS 99 Carbon (100 mm) Seat Post: S-Works FACT Carbon Saddle: Fizik Antares Tires: Specialized Turbo Cotton, 700 x 25c Tire Type: Clincher Pedals: Sold Separately Bike ID: 98765439321755 Description: The Specialized S-Works Roubaix SL4 is engineered for those who demand both speed and comfort. Its FACT 11r carbon frame, combined with vibration-damping Zertz inserts, ensures a smooth ride over rough roads, allowing you to ride longer and faster. The bike features lightweight HED Ardennes SL wheels that excel on climbs and descents, and the Shimano Ultegra Di2 electronic groupset provides precise and rapid shifting. The S-Works carbon seatpost and Fizik Antares saddle add to the comfort, making this bike ideal for endurance rides and long-distance events.