motocross / default rider 183 cm
KTM 350 SX-F vs Yamaha YZ426F ergonomics
KTM 350 SX-F and Yamaha YZ426F land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
KTM 350 SX-F
All contacts reached
Yamaha YZ426F
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The KTM 350 SX-F has a 992 mm seat; the Yamaha YZ426F sits at 998 mm — a 6 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 99 cm for the KTM 350 SX-F and 100 cm for the Yamaha YZ426F.
That makes the KTM 350 SX-F 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 YZ426F 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 | KTM 350 SX-F | Yamaha YZ426F |
|---|---|---|
| Seat height | 992 mm | 998 mm |
| Wheelbase | 1,495 mm | 1,490 mm |
| Wet weight | - | - |
| Displacement | 350 cc | 426 cc |
Posture metrics
Knee angle
- KTM 350 SX-F
- Sport (58.1 deg)
- Yamaha YZ426F
- Sport (58.1 deg)
Hip angle
- KTM 350 SX-F
- Neutral (93.1 deg)
- Yamaha YZ426F
- Neutral (93.2 deg)
Elbow angle
- KTM 350 SX-F
- Relaxed (143.3 deg)
- Yamaha YZ426F
- Relaxed (143.3 deg)
Torso lean
- KTM 350 SX-F
- Neutral (12.7 deg)
- Yamaha YZ426F
- Neutral (12.6 deg)