motocross / default rider 183 cm
KTM 150 SX vs Yamaha YZ125 ergonomics
KTM 150 SX and Yamaha YZ125 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
KTM 150 SX
All contacts reached
Yamaha YZ125
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 KTM 150 SX lists a 986 mm seat; the Yamaha YZ125 lists 980 mm — a 6 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 YZ125 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 | KTM 150 SX | Yamaha YZ125 |
|---|---|---|
| Seat height | 986 mm | 980 mm |
| Wheelbase | 1,471 mm | 1,445 mm |
| Wet weight | - | 96 kg |
| Displacement | 144 cc | 125 cc |
Posture metrics
Knee angle
- KTM 150 SX
- Sport (58.1 deg)
- Yamaha YZ125
- Sport (58.0 deg)
Hip angle
- KTM 150 SX
- Neutral (93.6 deg)
- Yamaha YZ125
- Neutral (94.2 deg)
Elbow angle
- KTM 150 SX
- Relaxed (143.3 deg)
- Yamaha YZ125
- Relaxed (143.3 deg)
Torso lean
- KTM 150 SX
- Neutral (12.3 deg)
- Yamaha YZ125
- Neutral (11.9 deg)