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2021 YZ250F

Product Details:
Last year, the 2020 YZ250F introduced an
all-new engine, frame, and bodywork with
features never-before seen on a 250cc
class motorcycle to deliver class-leading
engine performance. Yamaha’s
championship-winning design returns with
the 2020 YZ250F.
MX Competition
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Product Description
2021 YZ250F

Its new lightweight electric starter saves valuable seconds when it matters – and with Yamaha’s exclusive Power Tuner app and adjustable mapping, it’s easy to choose the exact power profile for optimum race results at every track.

The compact new chassis increases agility – and new suspension systems deliver winning performance with class-leading feel. So expect more. Because the all-new Yamaha YZ250F gives you the highest level of tuneable performance ever seen in the 250cc class.

With its front facing inlet and rear exiting exhaust, the YZ250F's innovative reverse cylinder head offers many advantages over a conventional design. These include increased intake and exhaust efficiency, as well as enhanced mass centralisation thanks to the use of a top-mounted air filter and underseat fuel tank. Yamaha's engineers have taken this cutting-edge technology to the next level, and developed a new reverse cylinder head that gives the YZ250F rider even stronger mid to high rpm pulling power.

Using feedback from our factory teams, Yamaha has been able to fine-tune the frame in order to ensure that YZ250F riders are able to fully exploit the increased engine performance of the uprated model. Compared to the 2016 design, the 2017 frame is around 12mm wider in the area behind the swingarm pivot point, and this increased torsional rigidity ensures a higher degree of handling stability.

Increased rideability and comfort have been achieved on the 2017 YZ250F through a number of revisions to the front and rear suspension. The class-leading Air Oil Separate (AOS) KYB® front forks feature a new more rigid outer tube design and slightly reduced oil capacity, and these changes - together with new factory suspension settings – give improved rider feedback for improved chassis performance and stability in ruts, bumps and corners.

To achieve a roomier riding position that best suits a wide range of racers, the footrest position on the 2017 YZ250F has been lowered by 5mm. This also helps to lower the centre of gravity to give increased control in ruts and corners.

For improved brake feel, the 245mm rear disc is manufactured using the same heat resistant steel as the 270mm front disc, giving total braking confidence on the fastest tracks.

Quick release fastners on the airbox allows for easy access, to the large capacity air filter.

The muffler is moved forward. The exhaust pipe, which needs a certain length for good low and mid range torque, winds around the cylinder head like a snake, centralising weight.

Engine TypeLiquid-cooled, 4-stroke, DOHC, 4-valves
Displacement250 cc
Bore x Stroke77 x 53.6 mm
Compression Ratio13.5:1
Lubrication SystemWet sump
Fuel ManagementFuel Injection
Starter SystemKick
Fuel Tank Capacity7.5 L
Oil Capacity0.9 L
Final TransmissionConstant mesh 5-speed
Length2170 mm
Width825 mm
Height1280 mm
Seat Height965 mm
Wheelbase1475 mm
Ground Clearance330 mm
Dry Weight99 kg
Wet Weight105 kg with 7.5 litres of fuel
Frame TypeBilateral Beam
Suspension FrontTelescopic fork, 310mm travel
Suspension RearSwingarm (link suspension), 315mm travel
Brakes FrontHydraulic 270mm single disc
Brakes RearHydraulic 245mm single disc
Tyres Front80/100-21 MS32
Tyres Rear100/90-19 MS32