supermoto / default rider 183 cm
Yamaha XT660X vs Yamaha XT660X ergonomics
Yamaha XT660X and Yamaha XT660X have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
Yamaha XT660X
All contacts reached
Yamaha XT660X
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Yamaha XT660X lists a 865 mm seat; the Yamaha XT660X lists 865 mm, within a few millimetres of each other. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
Geometry snapshot
| Spec | Yamaha XT660X | Yamaha XT660X |
|---|---|---|
| Seat height | 865 mm | 865 mm |
| Wheelbase | 1,490 mm | 1,505 mm |
| Wet weight | 185 kg | 186 kg |
| Displacement | 659 cc | 660 cc |
Posture metrics
Knee angle
- Yamaha XT660X
- Sport (58.1 deg)
- Yamaha XT660X
- Sport (58.2 deg)
Hip angle
- Yamaha XT660X
- Neutral (93.2 deg)
- Yamaha XT660X
- Neutral (92.8 deg)
Elbow angle
- Yamaha XT660X
- Relaxed (143.3 deg)
- Yamaha XT660X
- Relaxed (143.3 deg)
Torso lean
- Yamaha XT660X
- Neutral (12.6 deg)
- Yamaha XT660X
- Neutral (12.8 deg)