motocross / default rider 183 cm
CZ 400 MX Type 981 vs Yamaha YZ85 ergonomics
CZ 400 MX Type 981 and Yamaha YZ85 land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
CZ 400 MX Type 981
All contacts reached
Yamaha YZ85
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The CZ 400 MX Type 981 has a 836 mm seat; the Yamaha YZ85 sits at 841 mm — a 5 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 84 cm for the CZ 400 MX Type 981 and 84 cm for the Yamaha YZ85.
That makes the CZ 400 MX Type 981 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 YZ85 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 | CZ 400 MX Type 981 | Yamaha YZ85 |
|---|---|---|
| Seat height | 836 mm | 841 mm |
| Wheelbase | 1,390 mm | 1,255 mm |
| Wet weight | - | 73 kg |
| Displacement | 400 cc | 85 cc |
Posture metrics
Knee angle
- CZ 400 MX Type 981
- Sport (57.9 deg)
- Yamaha YZ85
- Sport (57.6 deg)
Hip angle
- CZ 400 MX Type 981
- Neutral (95.4 deg)
- Yamaha YZ85
- Neutral (98.4 deg)
Elbow angle
- CZ 400 MX Type 981
- Relaxed (143.3 deg)
- Yamaha YZ85
- Relaxed (143.3 deg)
Torso lean
- CZ 400 MX Type 981
- Neutral (11.1 deg)
- Yamaha YZ85
- Neutral (9.1 deg)