enduro / default rider 183 cm
Yamaha YZ125X vs Yamaha YZ250X ergonomics
Yamaha YZ125X and Yamaha YZ250X 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
Yamaha YZ125X
All contacts reached
Yamaha YZ250X
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 Yamaha YZ125X lists a 970 mm seat; the Yamaha YZ250X lists 975 mm — a 5 mm difference. 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.
On seat height alone, the Yamaha YZ125X has the easier modeled ground reach. Load your measurements into the simulator to compare the model, then verify both motorcycles in person.
Geometry snapshot
| Spec | Yamaha YZ125X | Yamaha YZ250X |
|---|---|---|
| Seat height | 970 mm | 975 mm |
| Wheelbase | 1,455 mm | 1,486 mm |
| Wet weight | 96 kg | 104 kg |
| Displacement | 125 cc | 249 cc |
Posture metrics
Knee angle
- Yamaha YZ125X
- Sport (58.1 deg)
- Yamaha YZ250X
- Sport (58.1 deg)
Hip angle
- Yamaha YZ125X
- Neutral (93.9 deg)
- Yamaha YZ250X
- Neutral (93.2 deg)
Elbow angle
- Yamaha YZ125X
- Relaxed (143.3 deg)
- Yamaha YZ250X
- Relaxed (143.3 deg)
Torso lean
- Yamaha YZ125X
- Neutral (12.1 deg)
- Yamaha YZ250X
- Neutral (12.5 deg)