NEW Shimano Ultegra RD-R8050-GS Di2 Rear Derailleur - 11-Speed, Medium Cage, Black inventory-apparel-wallets It works with replaceable batteries

It works with replaceable batteries so it can last forever

Classic shape with new levels of style and performance

Mounts to a variety of racks: requires 55-pound minimum load capacity

Stack Height: 36

NEW Shimano Ultegra RD-R8050-GS Di2 Rear Derailleur - 11-Speed, Medium Cage, Black inventory-apparel-wallets It works with replaceable batteriesThe Shimano Ultegra R8050 11 speed rear derailleur focuses on stress free operation in order to provide all day riding comfort with braking and shifting. Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Derailleur Mount Type: 10x1 Standard Rear Der Shifter Compatibility: Shimano Road Di2 Cage Length: Medium Drivetrain Speeds: 11 Weight: 242 Color: Black keyword search: GM24855V Chain Wrap Capacity (teeth): 39 Largest Cog: 34