standard / default rider 183 cm
Triumph Bonneville 800 vs Triumph Thunderbird Sport 900 ergonomics
Triumph Bonneville 800 and Triumph Thunderbird Sport 900 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
Triumph Bonneville 800
All contacts reached
Triumph Thunderbird Sport 900
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 Triumph Bonneville 800 lists a 775 mm seat; the Triumph Thunderbird Sport 900 lists 775 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 | Triumph Bonneville 800 | Triumph Thunderbird Sport 900 |
|---|---|---|
| Seat height | 775 mm | 775 mm |
| Wheelbase | 1,493 mm | 1,550 mm |
| Wet weight | - | - |
| Displacement | 790 cc | 885 cc |
Posture metrics
Knee angle
- Triumph Bonneville 800
- Sport (58.1 deg)
- Triumph Thunderbird Sport 900
- Sport (58.3 deg)
Hip angle
- Triumph Bonneville 800
- Neutral (93.1 deg)
- Triumph Thunderbird Sport 900
- Neutral (91.8 deg)
Elbow angle
- Triumph Bonneville 800
- Relaxed (143.3 deg)
- Triumph Thunderbird Sport 900
- Relaxed (143.3 deg)
Torso lean
- Triumph Bonneville 800
- Neutral (12.7 deg)
- Triumph Thunderbird Sport 900
- Neutral (13.5 deg)