supermoto / default rider 183 cm
Aprilia SXV 450 vs Yamaha WR125X ergonomics
Aprilia SXV 450 and Yamaha WR125X 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
Aprilia SXV 450
All contacts reached
Yamaha WR125X
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 Aprilia SXV 450 lists a 918 mm seat; the Yamaha WR125X lists 920 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 | Aprilia SXV 450 | Yamaha WR125X |
|---|---|---|
| Seat height | 918 mm | 920 mm |
| Wheelbase | 1,470 mm | 1,430 mm |
| Wet weight | - | 137 kg |
| Displacement | 449 cc | 125 cc |
Posture metrics
Knee angle
- Aprilia SXV 450
- Sport (58.1 deg)
- Yamaha WR125X
- Sport (58.0 deg)
Hip angle
- Aprilia SXV 450
- Neutral (93.6 deg)
- Yamaha WR125X
- Neutral (94.4 deg)
Elbow angle
- Aprilia SXV 450
- Relaxed (143.3 deg)
- Yamaha WR125X
- Relaxed (143.3 deg)
Torso lean
- Aprilia SXV 450
- Neutral (12.3 deg)
- Yamaha WR125X
- Neutral (11.8 deg)