XTR M9100, the next-dimensional MTB components, were developed on the basis of the experiences gained by Shimano over 27 years. They were designed for the most demanding MTB races, such as XC, Enduro and marathon races. I-SPEC EV electric shifting enhances riding with a more flexible and easy-to-operate cockpit. The quick and light touch shifting encourages rider concentration. Hyperglide+ shifting system enables continuous pedaling while shifting. Plus, the high-performance disc brake is optimum for XC and Enduro racings.