SHIMANO ALFINE - DI2 Internal Geared Rear Hub - CENTER LOCK - Disc Brake - O.L.D. 135 mm - 8-speed
The SHIMANO ALFINE S7051-8 hub offers a wide 307% 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 overall riding comfortability and efficiency
- Higher shifting performance even under high chain tension induced by E-bike motors
- Improvement is suitable for both E-bike and non E-bike use
TECHNOLOGIES
PRODUCT SPECIFICATIONS
MODEL NO | SG-S7051-8 |
---|---|
SERIES | ALFINE S7050/S705 Series |
Color | Silver | Black |
Average weight | 1670 |
Brake type_Mount Type | CENTER LOCK disc brake |
---|---|
Speeds | 8 |
Gear ratio_Total | 307% |
Gear ratio_Total | 307% |
Gear ratio_1 | 0.527 |
Gear ratio_1 | 0.527 |
Gear ratio_2 | 0.644 |
Gear ratio_2 | 0.644 |
Gear ratio_3 | 0.748 |
Gear ratio_3 | 0.748 |
Gear ratio_4 | 0.851 |
Gear ratio_4 | 0.851 |
Gear ratio_5 | 1 |
Gear ratio_5 | 1 |
Gear ratio_6 | 1.223 |
Gear ratio_6 | 1.223 |
Gear ratio_7 | 1.419 |
Gear ratio_7 | 1.419 |
Gear ratio_8 | 1.615 |
Gear ratio_8 | 1.615 |
Shifting POWER MODULATOR | ✔ |
Shifting power modulator | ✔ |
Spoke hole_32H | ✔ |
Spoke hole_36H | ✔ |
Axle length (mm)_187 | ✔ |
Shifting Structure | DI2 |
Shifting structure | DI2 |
Flange distance (mm) | 57.3 |
Offset (mm) | 3.15 |
P.C.D. left / right (mm) | 92.6 |
Flange diameter (mm) | 104.3 |
O.L.D. (mm) | 135 |
Spoke hole_32H | ✔ |
Spoke hole_36H | ✔ |
Driving efficiency | High |
Flange width (mm)_Left | 3.2 |
Flange width (mm)_Right | 3.2 |
Gear change support mechanism | ✔ |
Silent clutch | ✔ |
Spoke size | #13 / #14 |
Rear speeds | 8 |