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 pulleys with taller teeth improve chain security and provide higher overall ride height. Aluminium cage. Max cog: 46-48T. Capacity: 41T.