The GMC Denali 700C 21-Speed Road Bike is built around a light-weight aluminum road bike frame. You’ll be able to stop on a dime with the alloy calipers and brake levers and the prime-profile alloy Vitesse racing rims look as excellent as they carry out. Shimano Revo shifters will let you shift without taking your hands off the care for bars providing safety and confidence. A Shimano derailleur completes the drive train for fast and smooth gear changes. Lastly, this road bike will allow you to stay hydrated with the included alloy water bottle cage.