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.
FEATURES
- 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
PRODUCT SPECIFICATIONS
| MODEL NO | SG-S7051-8 |
|---|---|
| SERIES | EP5 EP500 Series |
| Color | Silver | Black |
| Average weight | 1670 |
| Brake type|Mount type | CENTER LOCK disc brake |
|---|---|
| Rear speeds | 8 |
| Gear ratio|Total | 307% |
| Gear ratio|1 | 0.527 |
| Gear ratio|2 | 0.644 |
| Gear ratio|3 | 0.748 |
| Gear ratio|4 | 0.851 |
| Gear ratio|5 | 1 |
| Gear ratio|6 | 1.223 |
| Gear ratio|7 | 1.419 |
| Gear ratio|8 | 1.615 |
| Shifting structure | Di2 |
| Silent clutch | ✔ |
| Gear change support mechanism | ✔ |
| Shifting POWER MODULATOR | ✔ |
| Driving efficiency | High |
| O.L.D. (mm) | 135 |
| Spoke size | #13/#14 |
| Spoke hole|32H | ✔ |
| Spoke hole|36H | ✔ |
| Axle length (mm)|187 | ✔ |
| Flange distance (mm) | 57.3 |
| Flange diameter (mm) | 104.3 |
| Flange width (mm)|Right | 3.2 |
| Flange width (mm)|Left | 3.2 |
| Offset (mm) | 3.15 |
| P.C.D. left / right (mm) | 92.6 |
