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Keep your focus and enjoyment on smooth pedaling with the inspiring and intuitive automatic shifting of the SHIMANO CUES RD-U6050 rear derailleur
BB Inclusion No BCD 94 Chainline 47
Smooth valve base geometry
X4P Quattro Bolt Locking Mechanism locks shackle on four sides
Ultegra Di2 RD-R8050 oso Keep your focus and enjoymentShimano shadow RD construction Low profile rear derailleur design, less likely to be damaged in crash Shimano Synchronised Shift and system communication with front derailleur SS: compatible with 11 25 to 11 30 cassttes GS: compatible with 11 28 to 11 34 cassettes Weight: 242g (SS), 249g (GS) Attributes Max Front Difference 16T Minimum Cog 11T Primary Color Grey RD Spring Type Shadow Speed 11
