Mountain speed Grantel G137 27.5 inches wheels, 21 speeds, aluminum frame
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| Brand: | Unbranded |
| Description: | , Mountain MTB, , Hardtail Front suspension, 27.5 wheels} |
| Number of speeds: | 21 |
| Floor: | Female Male |
| Depreciation: | Hardtail Front cushioning |
| Fork design: | Air-oil |
| Frame material: | Aluminium alloy |
| Bike settings and adjustments: | Saddle height |
| Fork travel: | 70 mm |
| Wheel diameter: | 27.5" |
| Rim material: | Steel |
| Front brake type: | Disk |
| Pedal design: | Classical |
| Front derailleur name: | lux |
| Steering column design: | Semi-integrated, |