standard / default rider 183 cm
Royal Enfield Guerrilla 450 vs Triumph Speed Twin 900 ergonomics
Royal Enfield Guerrilla 450 and Triumph Speed Twin 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
Royal Enfield Guerrilla 450
All contacts reached
Triumph Speed Twin 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 Royal Enfield Guerrilla 450 lists a 780 mm seat; the Triumph Speed Twin 900 lists 780 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 | Royal Enfield Guerrilla 450 | Triumph Speed Twin 900 |
|---|---|---|
| Seat height | 780 mm | 780 mm |
| Wheelbase | 1,440 mm | 1,449 mm |
| Wet weight | 185 kg | 216 kg |
| Displacement | 452 cc | 900 cc |
Posture metrics
Knee angle
- Royal Enfield Guerrilla 450
- Sport (58.0 deg)
- Triumph Speed Twin 900
- Sport (58.0 deg)
Hip angle
- Royal Enfield Guerrilla 450
- Neutral (94.3 deg)
- Triumph Speed Twin 900
- Neutral (94.2 deg)
Elbow angle
- Royal Enfield Guerrilla 450
- Relaxed (143.3 deg)
- Triumph Speed Twin 900
- Relaxed (143.3 deg)
Torso lean
- Royal Enfield Guerrilla 450
- Neutral (11.9 deg)
- Triumph Speed Twin 900
- Neutral (12.0 deg)