naked / default rider 183 cm
Suzuki GSX-8S vs Triumph Speed Four ergonomics
Suzuki GSX-8S and Triumph Speed Four 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 GSX-8S
All contacts reached
Triumph Speed Four
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 GSX-8S lists a 810 mm seat; the Triumph Speed Four lists 810 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 GSX-8S | Triumph Speed Four |
|---|---|---|
| Seat height | 810 mm | 810 mm |
| Wheelbase | 1,465 mm | 1,394 mm |
| Wet weight | 202 kg | - |
| Displacement | 776 cc | 599 cc |
Posture metrics
Knee angle
- Suzuki GSX-8S
- Sport (61.8 deg)
- Triumph Speed Four
- Sport (61.5 deg)
Hip angle
- Suzuki GSX-8S
- Neutral (91.1 deg)
- Triumph Speed Four
- Neutral (92.8 deg)
Elbow angle
- Suzuki GSX-8S
- Relaxed (143.3 deg)
- Triumph Speed Four
- Relaxed (143.3 deg)
Torso lean
- Suzuki GSX-8S
- Neutral (13.1 deg)
- Triumph Speed Four
- Neutral (12.0 deg)