sport / default rider 183 cm
Yamaha RD500LC vs Yamaha YZF-R25 ergonomics
Yamaha RD500LC and Yamaha YZF-R25 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
Yamaha RD500LC
All contacts reached
Yamaha YZF-R25
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 Yamaha RD500LC lists a 780 mm seat; the Yamaha YZF-R25 lists 780 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 | Yamaha RD500LC | Yamaha YZF-R25 |
|---|---|---|
| Seat height | 780 mm | 780 mm |
| Wheelbase | 1,375 mm | 1,380 mm |
| Wet weight | - | 169 kg |
| Displacement | 499 cc | 250 cc |
Posture metrics
Knee angle
- Yamaha RD500LC
- Sport (60.7 deg)
- Yamaha YZF-R25
- Sport (60.7 deg)
Hip angle
- Yamaha RD500LC
- Neutral (99.5 deg)
- Yamaha YZF-R25
- Neutral (99.6 deg)
Elbow angle
- Yamaha RD500LC
- Relaxed (143.3 deg)
- Yamaha YZF-R25
- Relaxed (143.3 deg)
Torso lean
- Yamaha RD500LC
- Forward (25.3 deg)
- Yamaha YZF-R25
- Forward (25.3 deg)