scooter / default rider 183 cm
KYMCO AK 550i Premium vs Vespa LX 150 ergonomics
KYMCO AK 550i Premium and Vespa LX 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
KYMCO AK 550i Premium
All contacts reached
Vespa LX 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 KYMCO AK 550i Premium lists a 785 mm seat; the Vespa LX 150 lists 785 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 | KYMCO AK 550i Premium | Vespa LX 150 |
|---|---|---|
| Seat height | 785 mm | 785 mm |
| Wheelbase | 1,580 mm | 1,290 mm |
| Wet weight | - | - |
| Displacement | 550 cc | 150 cc |
Posture metrics
Knee angle
- KYMCO AK 550i Premium
- Sport (58.4 deg)
- Vespa LX 150
- Sport (57.7 deg)
Hip angle
- KYMCO AK 550i Premium
- Neutral (91.1 deg)
- Vespa LX 150
- Neutral (97.6 deg)
Elbow angle
- KYMCO AK 550i Premium
- Relaxed (143.3 deg)
- Vespa LX 150
- Relaxed (143.3 deg)
Torso lean
- KYMCO AK 550i Premium
- Neutral (13.9 deg)
- Vespa LX 150
- Neutral (9.6 deg)