standard / default rider 183 cm
Suzuki GS750E vs Yamaha RD400 ergonomics
Suzuki GS750E and Yamaha RD400 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
Suzuki GS750E
All contacts reached
Yamaha RD400
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 Suzuki GS750E lists a 800 mm seat; the Yamaha RD400 lists 800 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 | Suzuki GS750E | Yamaha RD400 |
|---|---|---|
| Seat height | 800 mm | 800 mm |
| Wheelbase | 1,490 mm | 1,334 mm |
| Wet weight | 253 kg | 165 kg |
| Displacement | 748 cc | 399 cc |
Posture metrics
Knee angle
- Suzuki GS750E
- Sport (58.1 deg)
- Yamaha RD400
- Sport (57.8 deg)
Hip angle
- Suzuki GS750E
- Neutral (93.2 deg)
- Yamaha RD400
- Neutral (96.5 deg)
Elbow angle
- Suzuki GS750E
- Relaxed (143.3 deg)
- Yamaha RD400
- Relaxed (143.3 deg)
Torso lean
- Suzuki GS750E
- Neutral (12.6 deg)
- Yamaha RD400
- Neutral (10.3 deg)