You are about to leave this website. Are you sure?

I agree, take me there

Yamaha YZ250F

Yamaha YZ250F

The Monster Energy Star Yamaha Racing YZ250F is packed full of race-winning innovation and proven technology. Derived from a production model Yamaha YZ250F, the race version includes a host of advancements starting with the engine that has been developed to deliver a broad torque curve giving the racer an, “easy to ride” feel, and provides a high RPM power to aid in getting off to great starts.

Other upgrades include suspension with the KYB PSF1 fork known for its lightweight, and great adjustability on race day, along with a Vortex ECU in which the team develops its own custom maps within the Vortex software to achieve optimal performance at every race. Each year the entire team works hard to create custom parts out of titanium and other lightweight materials with the goal of getting the motorcycle as light as possible per the rule book. No stone goes unturned, from triple clamps to engine mounts, from fuel to tires, race development and testing is a never-ending process that continues all year long.

The Monster Energy Star Yamaha Racing 250 team would like to thank its technical partners for their support: Yamalube, GYTR, Parts Unlimited, Rekluse, FMF, Dunlop, Motion Pro, Works Connection, VP Fuels, Kite, Twin Air, KYB, Cycra, Light Speed, Arc, Race Tech Titanium, Boxo Tools, and Anti-Gravity Batteries.


Model YZ250F  
Engine Type 250cc liquid-cooled DOHC 4-stroke; 4 valves  
Displacement 250cc  
Bore x Stroke 77.0mm × 53.6mm  
Compression ratio 13.8:1  
Lubrication system Yamalube  
Clutch type Rekluse Torque Drive  
Fuel system Mikuni® fuel injection, 44mm  
Ignition system Vortex ECU  
Starter system OEM Electric  
Transmission system Constant-mesh 5-speed; multiplate wet clutch  
Final transmission Chain  


Frame Bilateral beam  
Chassis OEM Standard  
Front suspension Telescopic fork,KYB  
Front travel 310mm  
Caster angel 27.33°  
Trail 4.7 in  
Rear suspension Swingarm (link suspension, KYB)  
Rear travel 120mm  
Front brake Braking 270mm  
Rear brake Braking Batfly  
Front tyre Dunlop Mx33  
Rear tyre Dunlop Mx33  


Overall length 2174mm  
Overall width 825mm  
Overall height 1285mm  
Seat height 970mm  
Wheel base 1475mm  
Minimum ground clearance 335mm  
Wet weight 102 kg  
Fuel tank capacity 6 Liter  
Oil capacity 0.90 Liter  

Main titles:

2022 Christian Craig: AMA 250SX West Champion  
2021 Colt Nichols: AMA 250SX East Champion  
2021 Justin Cooper: AMA 250SX West Champion  
2020 Dylan Ferrandis: AMA 250SX West Champion  
2019 Dylan Ferrandis: AMA 250SX West Champion  
2018 Aaron Plessinger: AMA 250MX Champion  
2018 Aaron Plessinger: AMA 250SX West Champion  
2016 Cooper Webb: AMA 250MX Champion  
2016 Cooper Webb: AMA 250SX West Champion  
2015 Jeremy Martin: AMA 250MX Champion  
2015 Cooper Webb: AMA 250SX West Champion  
2014 Jeremy Martin: AMA 250MX Champion  
2010 Jessica Patterson: AMA WMX Champion  

Yamaha YZ250F