moped / default rider 183 cm
Honda RS125 Fi vs Yamaha Jupiter Z1 ergonomics
Honda RS125 Fi and Yamaha Jupiter Z1 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 RS125 Fi
All contacts reached
Yamaha Jupiter Z1
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 RS125 Fi lists a 767 mm seat; the Yamaha Jupiter Z1 lists 765 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 RS125 Fi | Yamaha Jupiter Z1 |
|---|---|---|
| Seat height | 767 mm | 765 mm |
| Wheelbase | 1,288 mm | 1,240 mm |
| Wet weight | 104 kg | 102 kg |
| Displacement | 125 cc | 114 cc |
Posture metrics
Knee angle
- Honda RS125 Fi
- Sport (57.7 deg)
- Yamaha Jupiter Z1
- Sport (57.6 deg)
Hip angle
- Honda RS125 Fi
- Neutral (97.6 deg)
- Yamaha Jupiter Z1
- Neutral (98.7 deg)
Elbow angle
- Honda RS125 Fi
- Relaxed (143.3 deg)
- Yamaha Jupiter Z1
- Relaxed (143.3 deg)
Torso lean
- Honda RS125 Fi
- Neutral (9.6 deg)
- Yamaha Jupiter Z1
- Neutral (8.9 deg)