Shimano Cues RD-U6000 10/11-Speed Rear Derailleur GS Cage Key Features Shadow plus design features a super low profile and optimized slant angle for light shifting action and improved clearance Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting Wide link design increases rigidity and service life 3 Fluorine-coated link pin bushing Large 13 tooth pulleys are used for longer life Aluminium bracket body with steel outer and inner plates For single ring, total capacity 39T 10/11-speed Compatible with LINKGLIDE and HG 11-speed chains Compatible with 50-48T low sprocket E-bike rated About Shimano CUES CUES range of components for mid-grade riding styles offers simplified compatibility, versatility and durability LINKGLIDE technology is very durable, up to 300% more durable than current Hyperglide drivetrain and maintaining smooth shifting To configure your CUES groupset please use this easy to use chart linked, just fill in the bike type and speeds required and simply pick the components required CLICK HERE