supermoto / default rider 183 cm
Aprilia SX 125 vs Beta Motor M4 Motard ergonomics
Aprilia SX 125 and Beta Motor M4 Motard land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Aprilia SX 125
95Comfortable
All contacts reached
Beta Motor M4 Motard
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 Aprilia SX 125 has a 870 mm seat; the Beta Motor M4 Motard sits at 870 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 Aprilia SX 125 and 87 cm for the Beta Motor M4 Motard.
Geometry snapshot
| Spec | Aprilia SX 125 | Beta Motor M4 Motard |
|---|---|---|
| Seat height | 870 mm | 870 mm |
| Wheelbase | 1,480 mm | 1,410 mm |
| Wet weight | 125 kg | - |
| Displacement | 125 cc | 349 cc |
Posture metrics
Knee angle
- Aprilia SX 125
- Sport (58.1 deg)
- Beta Motor M4 Motard
- Sport (58.0 deg)
Hip angle
- Aprilia SX 125
- Neutral (93.3 deg)
- Beta Motor M4 Motard
- Neutral (94.8 deg)
Elbow angle
- Aprilia SX 125
- Relaxed (143.3 deg)
- Beta Motor M4 Motard
- Relaxed (143.3 deg)
Torso lean
- Aprilia SX 125
- Neutral (12.5 deg)
- Beta Motor M4 Motard
- Neutral (11.5 deg)