motocross / default rider 183 cm
Bultaco Pursang 250 Mk IX vs GasGas MC 65 ergonomics
Bultaco Pursang 250 Mk IX and GasGas MC 65 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
Bultaco Pursang 250 Mk IX
All contacts reached
GasGas MC 65
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 Bultaco Pursang 250 Mk IX lists a 787 mm seat; the GasGas MC 65 lists 730 mm — a 57 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 | Bultaco Pursang 250 Mk IX | GasGas MC 65 |
|---|---|---|
| Seat height | 787 mm | 730 mm |
| Wheelbase | 1,422 mm | 1,142 mm |
| Wet weight | - | - |
| Displacement | 244 cc | 65 cc |
Posture metrics
Knee angle
- Bultaco Pursang 250 Mk IX
- Sport (58.0 deg)
- GasGas MC 65
- Sport (57.4 deg)
Hip angle
- Bultaco Pursang 250 Mk IX
- Neutral (94.6 deg)
- GasGas MC 65
- Neutral (100.9 deg)
Elbow angle
- Bultaco Pursang 250 Mk IX
- Relaxed (143.3 deg)
- GasGas MC 65
- Relaxed (143.3 deg)
Torso lean
- Bultaco Pursang 250 Mk IX
- Neutral (11.7 deg)
- GasGas MC 65
- Neutral (7.4 deg)