Shifters ( Gear Shifter )
The shifter is part of the drivetrain system. The shifters controls the gears and are often referred as gear shifters. There are three major brand Shimano, Sram and Campy others include MicroShift and Suntour. Road shifters are combined with the brake lever. Mountain bikes one can vary from 3x7 to the 1x (One by) meaning 1x11 or on gear in front ( no shifter ) and 11 in the Rear.