YZ250F

Yamaha YZ250F for Sale at Blacktown Yamaha in Kings Park, NSW | Specifications and Review Information

Developed using the very latest technology from the Yamahaâ€™s race-winning MX2 and SX factory bikes, the new YZ250F is sharper, quicker and smoother - giving you the performance and the confidence that you need to succeed.

The new 2021 Yamaha YZ250F has been redesigned for a more competitive, greater performing motocross experience. Featuring a thoroughly refined engine, revised frame, new suspension settings and new brakes, the YZ250F continues to dominate the competition with the best balance of power and handling.

And by using your smartphone with the Power Tuner app you can select the ideal power profile for optimum race performance in all conditions.

250CC LIQUID-COOLED DOHC 4-VALVE ENGINE

The YZ250F's already potent engine was treated to a host of refinements, including an all-new cylinder head with an improved intake port shape, new exhaust camshaft profile, a new silencer, and an updated ECU and more â€“ to produce stronger mid- to top-end power and increased peak power, while retaining its class-leading low-end torque.

ALUMINIUM BILATERAL BEAM FRAME

Tuned specifically for the 2021 YZ250F, the updated lightweight aluminium, bilateral beam frame, and new engine mounts have been redesigned with all-new flex characteristics to improve bump absorption, traction, and cornering performance.

SMART PHONE TUNING

Racers can adjust their engine performance straight from their phone using the onboard wireless connectivity through the industry's only free of charge complete tuning system, which is highlighted by the Yamaha Power Tuner App.

ELECTRIC STARTER SYSTEM

The 2021 YZ250F gives racers the edge right out of the gate. Standard equipment includes electric start, lightweight lithium battery, advanced fuel injection, a front-positioned intake, and rear-positioned exhaust layout to deliver the widest spread of power with reliable performance while balancing the weight for excellent mass-centralisation.

ADJUSTABLE ENGINE MAPS

Once settings are dialed-in, racers can then choose between two user-defined ECU maps on the fly via the handlebar-mounted dual-mode engine map switch. Complemented by new next-generation Team Yamaha Blue colours and graphics, the 2021 YZ250F showcases Yamaha's race-winning pedigree.

MORE POWERFUL BRAKES

Improved braking performance is achieved with newly engineered lighter front and rear brake calipers, larger surface area brake pads, and redesigned front (270mm) and rear (240mm) discs.

CLASS-LEADING SUSPENSION

The industry-leading, fully adjustable KYB coil spring-type fork with enhanced speed-sensitive damping provides an exceptional balance between comfort and bottoming resistance while the link-type rear suspension features a KYB shock with revised damping characteristics to match the updated chassis.

DURABLE TRANSMISSION

The transmission gears, dogs and shift mechanisms are designed to smooth gear changes and improve durability under the heavy demands of motocross racing, even with lighter gears and selector drum. The updated YZ250F also features a larger-diameter clutch to boost reliability even further under high-heat conditions.

Technical Specifications

Engine

Engine Type	Liquid cooled, 4-stroke, DOHC, 4-valve
Displacement (cc)	250.0
Bore x Stroke (mm)	77.0 x 53.6
Compression Ratio	13.8 : 1
Lubrication System	Wet sump
Fuel Management	Fuel Injection
Ignition	TCI
Starter System	Electric
Fuel Tank Capacity (L)	6.2
Final Transmission	Chain
Transmission	Constant mesh 5-speed

Chassis

Frame Type	Bilateral beam
Suspension Front	Telescopic forks, 310mm travel
Suspension Rear	Swingarm (link suspension), 317mm travel
Brakes Front	Hydraulic single disc, 270mm
Brakes Rear	Hydraulic single disc, 245mm
Tyres Front	80/100-21
Tyres Rear	100/90-19

Dimensions

Length (mm)	2175
Width (mm)	825
Height (mm)	1285
Seat Height (mm)	970
Wheelbase (mm)	1475
Ground Clearance (mm)	335
Wet Weight (kg)	106