motocross / default rider 183 cm
Maico 490 Sand Spider vs Yamaha YZ125 ergonomics
Maico 490 Sand Spider and Yamaha YZ125 have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
Maico 490 Sand Spider
All contacts reached
Yamaha YZ125
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Maico 490 Sand Spider lists a 1010 mm seat; the Yamaha YZ125 lists 998 mm — a 12 mm difference. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
On seat height alone, the Yamaha YZ125 has the easier modeled ground reach. Load your measurements into the simulator to compare the model, then verify both motorcycles in person.
Geometry snapshot
| Spec | Maico 490 Sand Spider | Yamaha YZ125 |
|---|---|---|
| Seat height | 1,010 mm | 998 mm |
| Wheelbase | 1,490 mm | 1,443 mm |
| Wet weight | 110 kg | - |
| Displacement | 488 cc | 124 cc |
Posture metrics
Knee angle
- Maico 490 Sand Spider
- Sport (58.1 deg)
- Yamaha YZ125
- Sport (58.0 deg)
Hip angle
- Maico 490 Sand Spider
- Neutral (93.2 deg)
- Yamaha YZ125
- Neutral (94.2 deg)
Elbow angle
- Maico 490 Sand Spider
- Relaxed (143.3 deg)
- Yamaha YZ125
- Relaxed (143.3 deg)
Torso lean
- Maico 490 Sand Spider
- Neutral (12.6 deg)
- Yamaha YZ125
- Neutral (11.9 deg)