It looks like there's a hill coming up. If you wanted to change gears to make the hill easier, what lever on the handlebars would you use?
Answer Shifter
The shifter is a lever on the handlebars that allows you to change gears while pedaling. A cable that runs from the shifter to the gears tells the derailleurs when to shift gears.
Asked by Jason Forbes · Last updated 5 years ago · 7K views · SOURCE