The Schwinn Sierra 21 is a commuter/comfort/hybrid bike with an aluminum Schwinn frame. The frame comes in colors like red, black and grape.
It was first released in 2011 and again in 2012. Due to the frame materials and other factors, we estimate that this bike weighs around 30 pounds. The Sierra 21 is fully rigid.
Components
The Sierra 21 comes with various commuter bike components, including an aluminum Schwinn Quill Adj stem, a Threaded headset and twist Shimano Revo shifters.
Drivetrain
The Sierra 21 has a Shimano derailleur.
Wheels
It comes with Schwinn Duro Sierra tires (26in x NaN) and Alex IC-1000 rims.