SHIMANO ALFINE DI2 Internal Geared Hub Disc Brake 11-speed




SHIMANO ALFINE - DI2 Internal Geared Rear Hub - CENTER LOCK - Disc Brake - O.L.D. 135 mm - 11-speed

The SHIMANO ALFINE S7051 hub offers a wide 409% gear range actuated by SHIMANO DI2 electronic shifting and an improved internal structure for better gear engagement. It is approved for E-BIKE and non E-BIKE use and is available in black and silver.

  • Improved internal structure for better gear engagement
  • Smooth shifting performance
  • Improved performance for both E-BIKE and non-E-BIKE usage



MODEL NO SG-S7051-11
SERIES ALFINE S7050/S705 Series
Color Silver | Black
Average weight 1665
Bike Type_Mount Type CENTER LOCK disc brake
Speeds 11
Gear ratio_Total 409%
Gear ratio_1 0.527
Gear ratio_2 0.681
Gear ratio_3 0.77
Gear ratio_4 0.878
Gear ratio_5 0.995
Gear ratio_6 1.134
Gear ratio_7 1.292
Gear ratio_8 1.462
Gear ratio_9 1.667
Gear ratio_10 1.888
Gear ratio_11 2.153
Shifting power modulator
Spoke hole_28H
Spoke hole_32H
Spoke hole_36H
Axle length (mm)_187
Shifting Structure DI2
Driving efficiency HIGH
Flange diameter (mm) 104.3
Flange width (mm)_Left 3.2
Flange width (mm)_Right 3.2
Gear change support mechanism
O.L.D. (mm) 135
Offset (mm) 3.15
P.C.D. (mm) 92.6
Silent clutch
Spoke size #13/#14
Flange distance (mm) 57.3


  • Hub Dynamo SHIMANO Hub Dynamo 3.0 W for CENTER LOCK Disc Brake (15 mm E-THRU)
  • Shifting Switch (DI2 spec.) SHIMANO ALFINE DI2 Shift Switch
  • Internal Geared Hub SHIMANO ALFINE DI2 Internal Geared Hub Disc Brake 8-speed
  • Cycle Computer SHIMANO DEORE XT DI2 System Information Display


  • Tools Right hand cone removal tool
  • Tools Right hand cone installation tool
  • Tools Right hand dust cap A installation tool
  • Tools Left hand inner dust cap installation tool