motocross / default rider 183 cm
GasGas MC 65 vs Yamaha YZ65 ergonomics
GasGas MC 65 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
GasGas MC 65
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 GasGas MC 65 lists a 730 mm seat; the Yamaha YZ65 lists 754 mm — a 24 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 GasGas MC 65 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 | GasGas MC 65 | Yamaha YZ65 |
|---|---|---|
| Seat height | 730 mm | 754 mm |
| Wheelbase | 1,142 mm | 1,140 mm |
| Wet weight | - | 61 kg |
| Displacement | 65 cc | 65 cc |
Posture metrics
Knee angle
- GasGas MC 65
- Sport (57.4 deg)
- Yamaha YZ65
- Sport (57.4 deg)
Hip angle
- GasGas MC 65
- Neutral (100.9 deg)
- Yamaha YZ65
- Neutral (101.1 deg)
Elbow angle
- GasGas MC 65
- Relaxed (143.3 deg)
- Yamaha YZ65
- Relaxed (143.3 deg)
Torso lean
- GasGas MC 65
- Neutral (7.4 deg)
- Yamaha YZ65
- Neutral (7.3 deg)