Stable performance of the drive on trails, gravel paths, and city streets. The compact design protects the rear derailleur from obstacles in a variety of situations. Total capacity: 41D. Maximum large sprocket: 36D (2x9 speeds). Make cycling an essential part of your active life with this 9-speed derailleur. It is designed for daily use, and with its smooth and decisive downshifts, you can navigate both the city and the countryside.