standard / default rider 183 cm
Yamaha SR400 vs Yamaha XJR1200 ergonomics
Yamaha SR400 and Yamaha XJR1200 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 SR400
All contacts reached
Yamaha XJR1200
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 SR400 lists a 790 mm seat; the Yamaha XJR1200 lists 790 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 SR400 | Yamaha XJR1200 |
|---|---|---|
| Seat height | 790 mm | 790 mm |
| Wheelbase | 1,410 mm | 1,500 mm |
| Wet weight | 174 kg | - |
| Displacement | 399 cc | 1,188 cc |
Posture metrics
Knee angle
- Yamaha SR400
- Sport (58.0 deg)
- Yamaha XJR1200
- Sport (58.2 deg)
Hip angle
- Yamaha SR400
- Neutral (94.8 deg)
- Yamaha XJR1200
- Neutral (92.9 deg)
Elbow angle
- Yamaha SR400
- Relaxed (143.3 deg)
- Yamaha XJR1200
- Relaxed (143.3 deg)
Torso lean
- Yamaha SR400
- Neutral (11.5 deg)
- Yamaha XJR1200
- Neutral (12.8 deg)