Shifting performance is important when you're riding in demanding terrain. Being able to go from a high gear to a low gear quickly will save your legs on those tough climbs. The Shimano Deore RD-M4120 10/11-Speed Rear Derailleur has a versatile design for both 10 and 11-speed drivetrains. It features Shadow technology for more stability during aggressive riding. This derailleur has a maximum cog size of 42T.
FEATURES
Versatile design for both 10 and 11-speed drivetrains
Shadow technology for better derailleur stability during aggressive riding
Maximum cog size: 42T
It fits 1*10 , 2*10, and 2*11 speed
***These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.***
