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ZEE provides a rock-solid platform to support aggressive riding on mountain trails. This is one groupset that gives you the confidence to find your flow and handle even the gnarliest of downhill rides. If you’re a newcomer to gravity riding, ZEE is the perfect place to start. Strong, durable crankset supports an aggressive riding style. Stable and silent operation with SHIMANO SHADOW RD+ short cage. Powerful, easily configurable disc brake set. *DH spec.
| MODEL NO | RD-M640-SS |
|---|---|
| SERIES | ZEE M640 Series |
| Color | Series color, - |
| Average weight | 275 g |
| Remarks | *DH spec. |
|---|---|
| B-Axle_Hollow axle | ✔ |
| Compatible chain | HG-X 10-speed |
| Direct attachment (Conventional) | ✔ |
| Direct mount compatible | ✔ |
| Fluoric coated link bushings | 3 |
| Low sprocket_Max. | 28T(DH spec) |
| Low sprocket_Min. | 23T |
| Max. front difference | Single |
| Mode converter | -* |
| Pulley_Sunken type pulley bolt | ✔ |
| Pulley_Teeth | 11T |
| Pulley cage | SS |
| Rear speeds | 10 |
| Top-Normal spring type_SHADOW RD+ | ✔ |
| Top-Normal Spring Type | SHIMANO SHADOW RD+ |
| Top sprocket_Max. | 12T |
| Top sprocket_Min. | 11T |
| Total capacity | 25T |
