microSHIFT Advent MX Pro Rear Derailleur - 10/11-Speed, Clutched, Repairable Aluminum Medium Cage, 50t Max, Black/Silver EA Rear Derailleur

Horizontal parallelogram eliminates "ghost shifting" and reduces shift force while IGUS bushings improve lateral stiffness and longevity Clutch is 33% stronger to ensure reduced chain slap and preventing dropped chains in even the roughest of terrains Repairable aluminum medium cage allows riders replace damaged cages to extend the rear derailleur life Pulley wheels feature sealed bearings that offer ultra-smooth operation and prevent the entry of contaminants to increase longevity Easy cable routing to reduce friction for a crisp, reliable shifting Compatible with Advent MX 11-speed and 10-speed systems Backwards compatible with Sword and Advent X systems