| Attribute | Yamaha PW 80 2002 × | Yamaha TT-R90 E × |
|---|---|---|
| General | ||
| Production from (year) | 2002 | 2004 |
| Make | Yamaha | Yamaha |
| Model | Yamaha PW 80 | Yamaha TT-R90 E |
| Category | Minibike, cross | Minibike, cross |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Displacement (cm³) | 79 | 89 |
| Power (kw) | 3.5 | 4 |
| 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 |
| Fuel control | - | Single Overhead Cams (SOHC) |
| Compression | 6.6:1 | 8.5:1 |
| Chassis | ||
| Front suspension | - | Telescopic fork |
| Rear suspension | - | Swinging arm (monocross) |
| Front brakes | Expanding brake | Expanding brake (drum brake) |
| Rear brakes | Expanding brake | Expanding brake (drum brake) |
| Diameter (mm) | - | 110 |
| 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 | 0.0614 | 0.0667 |
| 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 | 172 |