Shimano STI
Brake levers that also change gear, so the rider can shift without letting go of the handlebars.
Earlier, gear levers sat on the frame and the rider had to let go of the bars to shift. STI arrived with Dura-Ace in 1990 and soon became standard on racing bicycles.
Materials: Aluminium, plastic
Manufacture: Made in Sakai.
The brake lever that can also be swung sideways to shift.
The small lever behind the brake lever.