Yamaha YZ125 - 2009 Specifications and Reviews
The 2009 Yamaha YZ125 is a lightweight 124cc two-stroke motocross bike designed for young riders and beginners entering competitive racing. Known for its agile handling and responsive power delivery, it excels in technical terrain and tight sections. Its compact chassis and manageable seat height make it an ideal stepping stone in the motocross progression.
General information | |
| Category | Cross / motocross |
| Year | 2009 |
| Model | Yamaha YZ125 |
| | |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Ignition | CDI |
| Fuel system | Carburettor. Mikuni® TMX 38 |
| Bore x stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Compression | 8.6:1 |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 124.00 ccm (7.57 cubic inches) |
| | |
Physical measures and capacities | |
| Wheelbase | 1,443 mm (56.8 inches) |
| Ground clearance | 386 mm (15.2 inches) |
| Overall width | 828 mm (32.6 inches) |
| Overall length | 2,136 mm (84.1 inches) |
| Overall height | 1,316 mm (51.8 inches) |
| Seat height | 998 mm (39.3 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 94.3 kg (208.0 pounds) |
Yamaha YZ125 dimensions and frame | |
| Rear brakes diameter | 245 mm (9.6 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 250 mm (9.8 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 100/90-M19 |
| Front tyre dimensions | 80/80-M21 |
| Rear suspension travel | 315 mm (12.4 inches) |
| Rear suspension | Fully adjustable single shock |
| Front suspension travel | 300 mm (11.8 inches) |
| Front suspension | Speed-sensitive system inverted fork |
Speed and acceleration | |
| Color options | Team Yamaha Blue/White |
| Fuel capacity | 7.94 litres (2.10 gallons) |











































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