motocross / default rider 183 cm
Bultaco Pursang 250 Mk IX vs Yamaha YZ80 ergonomics
Bultaco Pursang 250 Mk IX and Yamaha YZ80 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
Bultaco Pursang 250 Mk IX
All contacts reached
Yamaha YZ80
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The Bultaco Pursang 250 Mk IX has a 787 mm seat; the Yamaha YZ80 sits at 800 mm — a 13 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 79 cm for the Bultaco Pursang 250 Mk IX and 80 cm for the Yamaha YZ80.
That makes the Bultaco Pursang 250 Mk IX the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the Yamaha YZ80 gives taller riders more legroom and a more open knee bend. Load your own height and inseam into the simulator to see exactly how each one fits you.
Geometry snapshot
| Spec | Bultaco Pursang 250 Mk IX | Yamaha YZ80 |
|---|---|---|
| Seat height | 787 mm | 800 mm |
| Wheelbase | 1,422 mm | 1,235 mm |
| Wet weight | - | - |
| Displacement | 244 cc | 83 cc |
Posture metrics
Knee angle
- Bultaco Pursang 250 Mk IX
- Sport (58.0 deg)
- Yamaha YZ80
- Sport (57.6 deg)
Hip angle
- Bultaco Pursang 250 Mk IX
- Neutral (94.6 deg)
- Yamaha YZ80
- Neutral (98.8 deg)
Elbow angle
- Bultaco Pursang 250 Mk IX
- Relaxed (143.3 deg)
- Yamaha YZ80
- Relaxed (143.3 deg)
Torso lean
- Bultaco Pursang 250 Mk IX
- Neutral (11.7 deg)
- Yamaha YZ80
- Neutral (8.8 deg)