motocross / default rider 183 cm
KTM 50 SX Factory Edition vs Yamaha YZ65 ergonomics
KTM 50 SX Factory Edition and Yamaha YZ65 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 50 SX Factory Edition
All contacts reached
Yamaha YZ65
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 50 SX Factory Edition has a 653 mm seat; the Yamaha YZ65 sits at 754 mm — a 101 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 65 cm for the KTM 50 SX Factory Edition and 75 cm for the Yamaha YZ65.
That makes the KTM 50 SX Factory Edition 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 YZ65 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 50 SX Factory Edition | Yamaha YZ65 |
|---|---|---|
| Seat height | 653 mm | 754 mm |
| Wheelbase | 1,024 mm | 1,140 mm |
| Wet weight | - | 61 kg |
| Displacement | 50 cc | 65 cc |
Posture metrics
Knee angle
- KTM 50 SX Factory Edition
- Sport (57.2 deg)
- Yamaha YZ65
- Sport (57.4 deg)
Hip angle
- KTM 50 SX Factory Edition
- Neutral (103.9 deg)
- Yamaha YZ65
- Neutral (101.1 deg)
Elbow angle
- KTM 50 SX Factory Edition
- Relaxed (143.3 deg)
- Yamaha YZ65
- Relaxed (143.3 deg)
Torso lean
- KTM 50 SX Factory Edition
- Neutral (5.4 deg)
- Yamaha YZ65
- Neutral (7.3 deg)