motocross / default rider 183 cm
KTM 50 SX Factory Edition vs Yamaha YZ65 ergonomics
KTM 50 SX Factory Edition and Yamaha YZ65 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 50 SX Factory Edition
All contacts reached
Yamaha YZ65
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 50 SX Factory Edition lists a 653 mm seat; the Yamaha YZ65 lists 754 mm — a 101 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 KTM 50 SX Factory Edition 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 50 SX Factory Edition | Yamaha YZ65 |
|---|---|---|
| Seat height | 653 mm | 754 mm |
| Wheelbase | 1,024 mm | 1,140 mm |
| Wet weight | - | 61 kg |
| Displacement | 50 cc | 65 cc |
Posture metrics
Knee angle
- KTM 50 SX Factory Edition
- Sport (57.2 deg)
- Yamaha YZ65
- Sport (57.4 deg)
Hip angle
- KTM 50 SX Factory Edition
- Neutral (103.9 deg)
- Yamaha YZ65
- Neutral (101.1 deg)
Elbow angle
- KTM 50 SX Factory Edition
- Relaxed (143.3 deg)
- Yamaha YZ65
- Relaxed (143.3 deg)
Torso lean
- KTM 50 SX Factory Edition
- Neutral (5.4 deg)
- Yamaha YZ65
- Neutral (7.3 deg)