Chapter 3: inspection, adjustment, and lubrication
The handlebar is the part of the bicycle you hold. The stem (Figure 1) attaches the handlebar to the fork. Together, they let you steer and control the bicycle. In addition, the stem works with the handlebar to define your position on the bicycle. Information on proper positioning of the parts is found in the section Fitting the bicycle.
Some handlebars use an aerobar extension to provide a more aerodynamic position on the bicycle.
Each of these items requires maintenance to be safe.
Figure 1:
Stem and handlebar
Handlebar
Grips
Stem
Aerobar