| General information |
| Model: | Yamaha TT-R 125 LW |
| Year: | 2002 |
| Category: | Cross / motocross |
| Engine and transmission |
| Displacement: | 123.70 ccm (7.55 cubic inches) |
| Engine type: | Single cylinder |
| Stroke: | 4 |
| Power: | 9.80 HP (7.2 kW)) @ 8000 RPM |
| Torque: | 9.85 Nm (1.0 kgf-m or 7.3 ft.lbs) @ 6500 RPM |
| Compression: | 10.0:1 |
| Bore x Stroke: | 54.0 x 54.0 mm (2.1 x 2.1 inches) |
| Fuel control: | SOHC |
| Cooling system: | Air |
| Physical measurements |
| Dry weight: | 78.0 kg (172.0 pounds) |
| Seat height: | 805 mm (31.7 inches) If adjustable, lowest setting. |
| Overall height: | 1,085 mm (42.7 inches) |
| Overall length: | 1,885 mm (74.2 inches) |
| Overall width: | 795 mm (31.3 inches) |
| Ground clearance: | 295 mm (11.6 inches) |
| Wheelbase: | 1,270 mm (50.0 inches) |
| Chassis and dimensions |
| Front Suspension travel: | 180 mm (7.1 inches) |
| Rear Suspension travel: | 168 mm (6.6 inches) |
| Front tyre dimensions: | 70/100-19 |
| Rear tyre dimensions: | 90/100-15 |
| Front brakes: | Expanding brake |
| Front brakes diameter: | 220 mm (8.7 inches) |
| Rear brakes: | Expanding brake |
| Rear brakes diameter: | 110 mm (4.3 inches) |
| Speed and acceleration |
| Power/weight ratio: | 0.1256 HP/kg |
| |
 |