supermoto / default rider 183 cm
GasGas SM 125 Halley vs SWM SM 500 R Black ergonomics
GasGas SM 125 Halley and SWM SM 500 R Black land within a few ergonomic points for the default rider, so the better choice comes down to posture preference and bike category.
Fit verdict
GasGas SM 125 Halley
All contacts reached
SWM SM 500 R Black
All contacts reached
The two bikes are close enough that posture preference matters more than the overall score.
Rider fit: reaching the ground
The GasGas SM 125 Halley has a 945 mm seat; the SWM SM 500 R Black sits at 920 mm — a 25 mm difference. As a rule of thumb you flat-foot a bike when your inseam roughly matches its seat height: about 95 cm for the GasGas SM 125 Halley and 92 cm for the SWM SM 500 R Black.
That makes the SWM SM 500 R Black the easier reach to the ground — the safer pick for shorter riders or anyone who wants both feet planted at a stop — while the GasGas SM 125 Halley 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 | GasGas SM 125 Halley | SWM SM 500 R Black |
|---|---|---|
| Seat height | 945 mm | 920 mm |
| Wheelbase | 1,460 mm | 1,495 mm |
| Wet weight | - | 140 kg |
| Displacement | 124 cc | 501 cc |
Posture metrics
Knee angle
- GasGas SM 125 Halley
- Sport (58.1 deg)
- SWM SM 500 R Black
- Sport (58.1 deg)
Hip angle
- GasGas SM 125 Halley
- Neutral (93.7 deg)
- SWM SM 500 R Black
- Neutral (93.1 deg)
Elbow angle
- GasGas SM 125 Halley
- Relaxed (143.3 deg)
- SWM SM 500 R Black
- Relaxed (143.3 deg)
Torso lean
- GasGas SM 125 Halley
- Neutral (12.2 deg)
- SWM SM 500 R Black
- Neutral (12.7 deg)