SPECIFICATION : Frame Advanced SL-Grade Composite, Integrated Seatpost Fork Advanced-Grade Composite, Full-Composite OverDrive 2 Steerer Shock N/A Handlebar Giant Contact SLR, Composite, 31.8 Stem Giant Contact SLR, Composite, OverDrive 2 Seatpost Advanced SL-Grade Composite, Integrated Design Saddle Fi'zi:k Aliante Gamma w/ K:ium Rails Pedals N/A Shifters Shimano Ultegra Di2, Electronic Front Derailleur Shimano Ultegra Di2, Electronic Rear Derailleur Shimano Ultegra Di2, Electronic Brakes Shimano Ultegra Brake Levers Shimano Ultegra Di2 Cassette Shimano Ultegra 11x28, 10-Speed Chain KMC X10SL Crankset Shimano Ultegra, 34/50 Bottom Bracket Shimano, Press Fit Rims Giant P-SLR1 WheelSystem Hubs Giant P-SLR1 WheelSystem Spokes Giant P-SLR1 WheelSystem Tires Giant P-SLR1, 700x23, Front and Rear Specific, Folding Extras 20mm ISP clamp, SL bond in top cap & steerer plug w/ alloy bolt, RideSense