scooter / default rider 183 cm
Gilera GP 800 vs Lambretta X125 ergonomics
Gilera GP 800 and Lambretta X125 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
Gilera GP 800
All contacts reached
Lambretta X125
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 Gilera GP 800 lists a 790 mm seat; the Lambretta X125 lists 790 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 | Gilera GP 800 | Lambretta X125 |
|---|---|---|
| Seat height | 790 mm | 790 mm |
| Wheelbase | 1,585 mm | 1,370 mm |
| Wet weight | - | 174 kg |
| Displacement | 839 cc | 124 cc |
Posture metrics
Knee angle
- Gilera GP 800
- Sport (58.4 deg)
- Lambretta X125
- Sport (57.9 deg)
Hip angle
- Gilera GP 800
- Neutral (91.1 deg)
- Lambretta X125
- Neutral (95.8 deg)
Elbow angle
- Gilera GP 800
- Relaxed (143.3 deg)
- Lambretta X125
- Relaxed (143.3 deg)
Torso lean
- Gilera GP 800
- Neutral (14.0 deg)
- Lambretta X125
- Neutral (10.9 deg)