cruiser / default rider 183 cm
Kawasaki Vulcan S vs Triumph Bonneville Speedmaster ergonomics
Kawasaki Vulcan S and Triumph Bonneville Speedmaster 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
Kawasaki Vulcan S
All contacts reached
Triumph Bonneville Speedmaster
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 Kawasaki Vulcan S lists a 705 mm seat; the Triumph Bonneville Speedmaster lists 705 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 | Kawasaki Vulcan S | Triumph Bonneville Speedmaster |
|---|---|---|
| Seat height | 705 mm | 705 mm |
| Wheelbase | 1,575 mm | 1,510 mm |
| Wet weight | 229 kg | 263 kg |
| Displacement | 649 cc | 1,200 cc |
Posture metrics
Knee angle
- Kawasaki Vulcan S
- Open (114.3 deg)
- Triumph Bonneville Speedmaster
- Open (109.1 deg)
Hip angle
- Kawasaki Vulcan S
- Sport (79.0 deg)
- Triumph Bonneville Speedmaster
- Sport (78.5 deg)
Elbow angle
- Kawasaki Vulcan S
- Relaxed (143.3 deg)
- Triumph Bonneville Speedmaster
- Relaxed (143.3 deg)
Torso lean
- Kawasaki Vulcan S
- Neutral (9.1 deg)
- Triumph Bonneville Speedmaster
- Neutral (8.1 deg)