cruiser / default rider 183 cm
Triumph Bonneville Speedmaster vs Yamaha Royal Star ergonomics
Triumph Bonneville Speedmaster and Yamaha Royal Star 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 Speedmaster
All contacts reached
Yamaha Royal Star
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 Speedmaster lists a 711 mm seat; the Yamaha Royal Star lists 710 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 Speedmaster | Yamaha Royal Star |
|---|---|---|
| Seat height | 711 mm | 710 mm |
| Wheelbase | 1,499 mm | 1,695 mm |
| Wet weight | - | 330 kg |
| Displacement | 1,197 cc | 1,294 cc |
Posture metrics
Knee angle
- Triumph Bonneville Speedmaster
- Open (108.1 deg)
- Yamaha Royal Star
- Open (125.1 deg)
Hip angle
- Triumph Bonneville Speedmaster
- Sport (78.4 deg)
- Yamaha Royal Star
- Sport (80.8 deg)
Elbow angle
- Triumph Bonneville Speedmaster
- Relaxed (143.3 deg)
- Yamaha Royal Star
- Relaxed (143.3 deg)
Torso lean
- Triumph Bonneville Speedmaster
- Neutral (7.8 deg)
- Yamaha Royal Star
- Neutral (10.9 deg)