Shimano 12v SGS RD-M8100 Deore XT Single rear derailleur. The new rear derailleur covers a 510% ratio range. Shadow RD technology protects the derailleur with a low-profile design that minimizes the risk of impact against rocks or any other obstacle. Combined with the new and improved bottom-out buffer, our all-new derailleur reduces the risk of chain-to-frame contact and improves chain retention.

• Shimano color: Series color.
• Model sale code: RD-M8100.
• Shimano item code: gearbox.
• Cycling discipline: MTB.
• Usage: Cycling.
• Maximum sprocket toothing: 10T.
• Number of rear gears: 12.
• SGS GS SS cage: Long cage.
• Minimum sprocket toothing: 51T.
• Compatible chain: HG 12-speed.
• System type: Mechanical.