Yamaha – official page web site
Forward thinking
With a winning track record that includes hard-fought FIM and AMA Championship wins on both sides of the Atlantic, the game-changing YZ250F has the right stuff to power you to the top of the podium.
For 2017 this high-tech motocross bike comes with an all-new high-performance reverse cylinder head that gives you the winning advantage against the opposition. And with its refined aluminium frame and new suspension settings, you can run harder and faster from the gate to the flag!
Whether you’re an experienced pro racer or a hard-charging amateur, the revolutionary YZ250F delivers all the power and agility that you need to maximise your potential. Think forward. Think YZ250F.
Engine
| Engine type | Single cylinder, liquid-cooled, 4-stroke, DOHC, 4-valves |
| Displacement | 250cc |
| Bore x stroke | 77.0 mm x 53.6 mm |
| Compression ratio | 13.5 : 1 |
| Maximum power | – |
| Maximum torque | – |
| Lubrication system | Wet sump |
| Clutch type | Wet, Multiple Disc |
| Fuel system | Fuel Injection |
| Ignition system | TCI |
| Starter system | Kick |
| Transmission system | Constant Mesh, 5-speed |
| Final transmission | Chain |
