aUDITOR smiling with spreadsheet and a calculator, emoji, ADD A puzzle CUES EP6 RD U6050 Di2. Comfortably smooth and intuitive auto shifting rear derailleur for 1x10 speed systems. Keep your focus and enjoyment on smooth pedaling with the inspiring and intuitive automatic shifting of the SHIMANO CUES RD U6050 rear derailleur. Automatic shifting compatibility lets anyone enjoy fun and sporty action without being an expert Always be ready for action in the right gear with SHIMANO STEPS enabled FREE SHIFT Automatic shifting without pedaling 11t upper and lower pulley wheels SD 300 port Compatible with LINKGLIDE 11 43T 10 speed CS Compatible with LINKGLIDE AND HG 11 speed chains Attributes Max Front Difference Single chainring only Maximum Cog 43T Minimum Cog 11T Primary Color Black Cage GS RD Capacity 32T RD Spring Type Shadow Speed 10 Mount Standard