| Attribute | Yamaha PW 80 2004 × | Yamaha TT-R 90 2002 × |
|---|---|---|
| General | ||
| Production from (year) | 2004 | 2002 |
| Make | Yamaha | Yamaha |
| Model | Yamaha PW 80 | Yamaha TT-R 90 |
| Category | Enduro / offroad | Cross / motocross |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 1 | - |
| Displacement (cm³) | 79 | 89 |
| Power (kw) | 3.4 | 4.1 |
| Cooling system | Air | Liquid |
| Transmission type,final drive | Chain | - |
| Torque (Nm) | 6.3 | 6.1 |
| Bore (mm) | 47 | 47 |
| Stroke (mm) | 45.8 | 51.8 |
| Gearbox | 3-speed | - |
| Fuel control | - | Single Overhead Cams (SOHC) |
| Compression | 6.6:1 | 8.5:1 |
| Chassis | ||
| Front suspension | Telescopic fork | - |
| Rear suspension | Monocross | - |
| Front brakes | Expanding brake (drum brake) | Expanding brake |
| Rear brakes | Expanding brake (drum brake) | Expanding brake |
| Front wheel travel (mm) | 110 | 110 |
| Rear wheel travel (mm) | 95 | 95 |
| Other | ||
| Color options |
| - |
| Dimensions | ||
| Wheelbase (mm) | 1,055 | 1,040 |
| Dry weight (kg) | 57 | 60 |
| Power/weight ratio | 0.0596 | 0.0683 |
| Overall height (mm) | 880 | 865 |
| Overall length (mm) | 1,540 | 1,525 |
| Overall width (mm) | 640 | 605 |
| Seat height (mm) | 635 | 625 |
| Ground clearance (mm) | 185 | 157 |