Shimano Deore – rear derailleur – Shimano Shadow RD – 1×11-speed: With the Shimano Shadow RD design at its core, the Shimano Deore M5100 rear derailleur ensures consistent MTB shifting even on the roughest terrains. Its low-profile design is crafted to prevent damage from rocks. Additionally, Shimano’s unique chain stabilizing technology minimizes chain drops and offers a noise-free drivetrain across all gear settings. Brand: SHIMANO Manufacturer Part Number: 90230614 Manufacturer: Shimano