Shimano Dura Ace 9100 gear shift for 11 speed Shimano rear derailleurs

R9100 STI grips are designed to be more ergonomic by making them slightly narrower, making the brake and shifter more adjustable so that they can be closer to the hand if you have small hands

It is designed to make the change of gear simpler and faster, and ultimately making it easier.

The rubber is made with a pattern, so you will have the best possible grip