The top speed of a Yamaha 125 dirt bike varies depending on the specific model and modifications.
Factors Affecting Top Speed:
- Model: Different Yamaha 125 dirt bike models, like the YZ125 and the TTR125, have varying engine specifications and power outputs, directly affecting their top speed.
- Modifications: Adding aftermarket parts, such as exhaust systems, air filters, and engine tuning, can significantly impact the bike's performance and top speed.
- Rider Weight: A heavier rider will experience a slightly lower top speed compared to a lighter rider due to increased drag and load on the engine.
- Terrain and Conditions: Factors like wind resistance, track surface, and elevation can influence the bike's top speed.
General Top Speed Ranges:
- Stock Yamaha YZ125: Typically achieves a top speed of around 65-70 mph.
- Stock Yamaha TTR125: Generally reaches a top speed of approximately 55-60 mph.
Note: These are approximate figures, and actual top speeds can vary based on the factors mentioned above.