What does double and triple gear shifters mean?

Asked by: Jenna Silva

How do you shift a Shimano STI?

Shimano Total Integration (STI) shifters use a split-lever design to change gears. A small lever just behind the brake lever shifts the chain onto a smaller cog, while the whole brake lever can be pushed to the side to shift to a larger cog.

How do you use Shimano Tiagra shifters?

Quote from video: Ones anyway the whole brake lever will move in order to shift the gear. And then inside it there is another lever that will shift the gears in the opposite directions.