cruiser / default rider 183 cm
Harley-Davidson Sportster 1200 Custom vs Triumph Bonneville Speedmaster ergonomics
Harley-Davidson Sportster 1200 Custom 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
Harley-Davidson Sportster 1200 Custom
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 Harley-Davidson Sportster 1200 Custom lists a 711 mm seat; the Triumph Bonneville Speedmaster lists 711 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 | Harley-Davidson Sportster 1200 Custom | Triumph Bonneville Speedmaster |
|---|---|---|
| Seat height | 711 mm | 711 mm |
| Wheelbase | 1,519 mm | 1,499 mm |
| Wet weight | - | - |
| Displacement | 1,202 cc | 1,197 cc |
Posture metrics
Knee angle
- Harley-Davidson Sportster 1200 Custom
- Open (109.8 deg)
- Triumph Bonneville Speedmaster
- Open (108.1 deg)
Hip angle
- Harley-Davidson Sportster 1200 Custom
- Sport (78.5 deg)
- Triumph Bonneville Speedmaster
- Sport (78.4 deg)
Elbow angle
- Harley-Davidson Sportster 1200 Custom
- Relaxed (143.3 deg)
- Triumph Bonneville Speedmaster
- Relaxed (143.3 deg)
Torso lean
- Harley-Davidson Sportster 1200 Custom
- Neutral (8.2 deg)
- Triumph Bonneville Speedmaster
- Neutral (7.8 deg)