scooter / default rider 183 cm
Honda SH350i vs Vespa ET4 150 ergonomics
Honda SH350i and Vespa ET4 150 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
Honda SH350i
All contacts reached
Vespa ET4 150
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 Honda SH350i lists a 805 mm seat; the Vespa ET4 150 lists 805 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 | Honda SH350i | Vespa ET4 150 |
|---|---|---|
| Seat height | 805 mm | 805 mm |
| Wheelbase | 1,450 mm | 1,280 mm |
| Wet weight | 172 kg | - |
| Displacement | 330 cc | 150 cc |
Posture metrics
Knee angle
- Honda SH350i
- Sport (58.1 deg)
- Vespa ET4 150
- Sport (57.7 deg)
Hip angle
- Honda SH350i
- Neutral (94.0 deg)
- Vespa ET4 150
- Neutral (97.7 deg)
Elbow angle
- Honda SH350i
- Relaxed (143.3 deg)
- Vespa ET4 150
- Relaxed (143.3 deg)
Torso lean
- Honda SH350i
- Neutral (12.0 deg)
- Vespa ET4 150
- Neutral (9.5 deg)