The new SHIMANO DEORE M6100 rear derailleur provides advanced shifting performance while reducing tension in low-speed gears. The larger 13T guide wheel improves efficiency and enhances chain management. It is also compatible with SHIMANO's new 12-speed card-type propulsion range. 1x12-speed SHIMANO SHADOW RD + (hidden rear dial) rear derailleur Fast and precise shifting for modern mountain bikes The drive system remains silent in all gears Reduce the rear derailleur and chain tension at low speed Larger 13T guide wheels Drive system remains stable on rough ground Narrow profile design to avoid rock damage Chain stabilization device reduces chain shedding, impact and noise Package Including: - M6100 Rear Derailleur SGS Note: 100% authentic, without the original box.