enduro / default rider 183 cm
Yamaha IT490 vs Yamaha TT600R ergonomics
Yamaha IT490 and Yamaha TT600R 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
Yamaha IT490
All contacts reached
Yamaha TT600R
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 Yamaha IT490 lists a 942 mm seat; the Yamaha TT600R lists 945 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 | Yamaha IT490 | Yamaha TT600R |
|---|---|---|
| Seat height | 942 mm | 945 mm |
| Wheelbase | 1,485 mm | 1,481 mm |
| Wet weight | - | 139 kg |
| Displacement | 487 cc | 595 cc |
Posture metrics
Knee angle
- Yamaha IT490
- Sport (58.1 deg)
- Yamaha TT600R
- Sport (58.1 deg)
Hip angle
- Yamaha IT490
- Neutral (93.2 deg)
- Yamaha TT600R
- Neutral (93.4 deg)
Elbow angle
- Yamaha IT490
- Relaxed (143.3 deg)
- Yamaha TT600R
- Relaxed (143.3 deg)
Torso lean
- Yamaha IT490
- Neutral (12.5 deg)
- Yamaha TT600R
- Neutral (12.5 deg)