supermoto / default rider 183 cm
Beta Motor M4 Motard vs Fantic XM 50 Performance ergonomics
Beta Motor M4 Motard and Fantic XM 50 Performance 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
Beta Motor M4 Motard
All contacts reached
Fantic XM 50 Performance
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 Beta Motor M4 Motard lists a 870 mm seat; the Fantic XM 50 Performance lists 870 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 | Beta Motor M4 Motard | Fantic XM 50 Performance |
|---|---|---|
| Seat height | 870 mm | 870 mm |
| Wheelbase | 1,410 mm | 1,435 mm |
| Wet weight | - | - |
| Displacement | 349 cc | 50 cc |
Posture metrics
Knee angle
- Beta Motor M4 Motard
- Sport (58.0 deg)
- Fantic XM 50 Performance
- Sport (58.0 deg)
Hip angle
- Beta Motor M4 Motard
- Neutral (94.8 deg)
- Fantic XM 50 Performance
- Neutral (94.3 deg)
Elbow angle
- Beta Motor M4 Motard
- Relaxed (143.3 deg)
- Fantic XM 50 Performance
- Relaxed (143.3 deg)
Torso lean
- Beta Motor M4 Motard
- Neutral (11.5 deg)
- Fantic XM 50 Performance
- Neutral (11.8 deg)