supermoto / default rider 183 cm
Honda FMX650 vs Rieju Marathon 125 SM Pro ergonomics
Honda FMX650 and Rieju Marathon 125 SM Pro 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
Honda FMX650
All contacts reached
Rieju Marathon 125 SM Pro
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 Honda FMX650 lists a 875 mm seat; the Rieju Marathon 125 SM Pro lists 876 mm, within a few millimetres of each other. 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.
Geometry snapshot
| Spec | Honda FMX650 | Rieju Marathon 125 SM Pro |
|---|---|---|
| Seat height | 875 mm | 876 mm |
| Wheelbase | 1,490 mm | 1,380 mm |
| Wet weight | 170 kg | - |
| Displacement | 644 cc | 125 cc |
Posture metrics
Knee angle
- Honda FMX650
- Sport (58.1 deg)
- Rieju Marathon 125 SM Pro
- Sport (57.9 deg)
Hip angle
- Honda FMX650
- Neutral (93.2 deg)
- Rieju Marathon 125 SM Pro
- Neutral (95.5 deg)
Elbow angle
- Honda FMX650
- Relaxed (143.3 deg)
- Rieju Marathon 125 SM Pro
- Relaxed (143.3 deg)
Torso lean
- Honda FMX650
- Neutral (12.6 deg)
- Rieju Marathon 125 SM Pro
- Neutral (11.0 deg)