moped / default rider 183 cm
Tomos Flexer 25 SM vs Yamaha Y15ZR ergonomics
Tomos Flexer 25 SM and Yamaha Y15ZR 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
Tomos Flexer 25 SM
All contacts reached
Yamaha Y15ZR
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 Tomos Flexer 25 SM lists a 800 mm seat; the Yamaha Y15ZR lists 845 mm — a 45 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 Tomos Flexer 25 SM 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 | Tomos Flexer 25 SM | Yamaha Y15ZR |
|---|---|---|
| Seat height | 800 mm | 845 mm |
| Wheelbase | 1,115 mm | 1,290 mm |
| Wet weight | - | - |
| Displacement | 49 cc | 150 cc |
Posture metrics
Knee angle
- Tomos Flexer 25 SM
- Sport (57.4 deg)
- Yamaha Y15ZR
- Sport (57.7 deg)
Hip angle
- Tomos Flexer 25 SM
- Neutral (101.7 deg)
- Yamaha Y15ZR
- Neutral (97.6 deg)
Elbow angle
- Tomos Flexer 25 SM
- Relaxed (143.3 deg)
- Yamaha Y15ZR
- Relaxed (143.3 deg)
Torso lean
- Tomos Flexer 25 SM
- Neutral (6.9 deg)
- Yamaha Y15ZR
- Neutral (9.6 deg)