scooter / default rider 183 cm
SYM Jet X 125 vs Vespa Primavera 150 ergonomics
SYM Jet X 125 and Vespa Primavera 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
SYM Jet X 125
All contacts reached
Vespa Primavera 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 SYM Jet X 125 lists a 780 mm seat; the Vespa Primavera 150 lists 780 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 | SYM Jet X 125 | Vespa Primavera 150 |
|---|---|---|
| Seat height | 780 mm | 780 mm |
| Wheelbase | 1,350 mm | 1,340 mm |
| Wet weight | 140 kg | 130 kg |
| Displacement | 125 cc | 155 cc |
Posture metrics
Knee angle
- SYM Jet X 125
- Sport (57.8 deg)
- Vespa Primavera 150
- Sport (57.8 deg)
Hip angle
- SYM Jet X 125
- Neutral (96.2 deg)
- Vespa Primavera 150
- Neutral (96.5 deg)
Elbow angle
- SYM Jet X 125
- Relaxed (143.3 deg)
- Vespa Primavera 150
- Relaxed (143.3 deg)
Torso lean
- SYM Jet X 125
- Neutral (10.6 deg)
- Vespa Primavera 150
- Neutral (10.4 deg)