The GMC Denali 700c 21-speed road bike is built around a lightweight aluminum road bike frame for racing or commuting. You’ll stop on a dime with the alloy calipers and brake levers, and the high-profile alloy vitesse racing rims look as good as they perform. The Shimano derailleur and Shimano revo shifts make it easy to change gears quickly and smoothly, and the high-performance 700c tires are up to the challenge of rigorous street racing. Lastly, this road bike will help you stay hydrated with the included alloy water bottle cage.