Wireless Di2 shifting designed for E-MTB and HYPERGLIDE+ compatibility. The durable Deore RD-M6260 long-cage 12-speed rear derailleur taps into proven wireless Di2 shifting technology and other strengths of the Deore Di2 groupset, while pulling power from the bike's main battery via E-TUBE cable port. The cable delivers a stable power supply and connectivity with the drive unit, eliminating the need to carry a separate back-up battery specifically for the rear derailleur. The RD-M6260 paired with the 10-51t cassette (cassette sold separate) delivers the range and features that all riders can appreciate.