sport-touring / default rider 183 cm
Ducati ST4 vs Ducati ST4S ergonomics
Ducati ST4 and Ducati ST4S 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
Ducati ST4
All contacts reached
Ducati ST4S
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 Ducati ST4 lists a 820 mm seat; the Ducati ST4S lists 820 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 | Ducati ST4 | Ducati ST4S |
|---|---|---|
| Seat height | 820 mm | 820 mm |
| Wheelbase | 1,430 mm | 1,430 mm |
| Wet weight | - | - |
| Displacement | 916 cc | 996 cc |
Posture metrics
Knee angle
- Ducati ST4
- Sport (57.8 deg)
- Ducati ST4S
- Sport (57.8 deg)
Hip angle
- Ducati ST4
- Neutral (90.9 deg)
- Ducati ST4S
- Neutral (90.9 deg)
Elbow angle
- Ducati ST4
- Relaxed (143.3 deg)
- Ducati ST4S
- Relaxed (143.3 deg)
Torso lean
- Ducati ST4
- Neutral (12.9 deg)
- Ducati ST4S
- Neutral (12.9 deg)