When we developed the Tarmac Disc, we didn't just want it to be fast. We wanted it to be fast everywhere. Long climbs, windy flats, Grand Tour stages, local fondosâ€”we built a race bike to be the most complete out there. How'd we do it? We started with our Rider-First Engineeredâ„¢ frame with a perfectly-tuned ride quality for every size, added in some serious aero tech that makes it 30 seconds faster than the Tarmac SL5 over 40 kilometers, and then made it 20% lighter. Nothing is lighter, faster, and better handling. This Tarmac comes with a reliable spec that includes 10-speed Shimano Tiagra mechanical shifting, quick-stopping hydraulic disc brakes, durable Axis Sport Disc wheels, and our fan-favorite Power saddle.