microSHIFT ADVENT X Rear Derailleur - 10-Speed Medium Cage Black With Clutch. With a raceworthy weight and the right gearing for any situation microSHIFT's top-of-the-line ADVENT X rear derailleur delivers high-end performance without high-end headaches. By using a 10-speed chain and wide range 11-48t cassette with predictable evenly spaced gear steps ADVENT X allows you to find the right gear even in challenging conditions. Add in microSHIFT's proprietary ratchet-and-pawl clutch larger pulleys with taller teeth for better chain retention and metric adjustment hardware and you've got everything you want and nothing you don't.

Compatible with ADVENT X 10-speed drivetrains only

Compatible with standard 10-speed chains

Ratchet-and-pawl clutch provides chain security and can be turned on and off with a switch

Metric adjustment hardware

Larger pulley and taller teeth for better chain security and higher ride height