This is Giants Endurance bike, light weight carbon frame, D-fuse seat stem for long ride compliance, geometry that provides a comfortable, yet stiff and responsive ride. Fast on the flats and climbs. All components are Shimano 105. The drivetrain is Shimano 105, 11 speed cassette, 50/34 crank, which is fast, reliable, and easy to work on. Brakes are Shimano 105 hydraulic disc, wheels are Giant PR2 tubeless compatible, tires are Continental 5000s.