supermoto / default rider 183 cm
Derbi Senda DRD X-Treme 50 SM vs Yamaha XT660X ergonomics
Derbi Senda DRD X-Treme 50 SM and Yamaha XT660X land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Derbi Senda DRD X-Treme 50 SM
95Comfortable
All contacts reached
Yamaha XT660X
95Comfortable
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The Derbi Senda DRD X-Treme 50 SM has a 865 mm seat; the Yamaha XT660X sits at 865 mm, within a few millimetres of each other. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 87 cm for the Derbi Senda DRD X-Treme 50 SM and 87 cm for the Yamaha XT660X.
Geometry snapshot
| Spec | Derbi Senda DRD X-Treme 50 SM | Yamaha XT660X |
|---|---|---|
| Seat height | 865 mm | 865 mm |
| Wheelbase | 1,413 mm | 1,505 mm |
| Wet weight | - | 186 kg |
| Displacement | 50 cc | 660 cc |
Posture metrics
Knee angle
- Derbi Senda DRD X-Treme 50 SM
- Sport (58.0 deg)
- Yamaha XT660X
- Sport (58.2 deg)
Hip angle
- Derbi Senda DRD X-Treme 50 SM
- Neutral (94.9 deg)
- Yamaha XT660X
- Neutral (92.8 deg)
Elbow angle
- Derbi Senda DRD X-Treme 50 SM
- Relaxed (143.3 deg)
- Yamaha XT660X
- Relaxed (143.3 deg)
Torso lean
- Derbi Senda DRD X-Treme 50 SM
- Neutral (11.5 deg)
- Yamaha XT660X
- Neutral (12.8 deg)