Di2 E-Tube electronic shifting
Sleek integrated appearance
New low-profile design, Shimano SHADOW RD
Race endurance, optimized slant angle
Wide compatibility
RD-SS covers: 11-25T to 11-30T
RD-GS covers: 11-28T to 11-34T
Maintain race concentration with more intuitive shift control
System communication with front derailleur, SHIMANO Synchronized Shift
Maximum Low Sprocket: 30T (SS); 34T (GS)
Minimum Top Sprocket: 11T
Maximum Front Tooth Difference: 16T
Specifications
CAGE LENGTH Medium
COLOR Series Color
FITS 34T max
GRAMS 249
MODEL RD-R8050-GS
MOUNT Direct
RANGE 39T
SERIES Di2/Ultegra
SPEEDS 11
TYPE Shadow






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