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Yamaha YZ250F

Tune. Race. Win.

Equipped with the most advanced performance-boosting technology in its class, the YZ250F’s all-new engine is the most powerful production 250cc 4-stroke ever manufactured by Yamaha.

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.

Details

  • All-new DOHC 250cc liquid cooled 4-stroke engine
  • Power Tuner smartphone app for trackside tuning
  • ‘On the fly’ 2-position engine mapping switch
  • Lightweight electric starter with li-ion battery
  • Slim and compact new bodywork and seat
  • New stronger bilateral aluminium beam frame
  • New larger diameter Air-Oil-Separate front forks
  • Light rear shock with improved damping performance
  • New heavy-duty clutch with lighter feel at lever
  • New high-efficiency angled radiator design
  • Redesigned air filter box
  • New high specification cam chain assembly

Engine
Engine type- 4-stroke, liquid-cooled, DOHC, 4-valves
Displacement- 250cc
Bore x stroke- 77 mm x 53.6 mm
Compression ratio- 13.8 : 1
Maximum power- N/A
Limited power version- kW (PS) @ rpm
Maximum torque- N/A
Lubrication system- Wet sump
Clutch type- Wet, Multiple Disc
Fuel system- Fuel Injection
Ignition system- TCI
Starter system- Electric
Transmission system- Constant Mesh, 5-speed
Final transmission- Chain

Chassis
Frame- Semi double cradle
Front travel- 309.8 mm
Caster angle- 27.1º
Trail- 119mm
Front suspension system- Telescopic forks
Rear suspension system- Monoshock
Rear travel- 314.96mm
Front brake- Hydraulic single disc 270 mm
Rear brake- Hydraulic single disc 245 mm
Front tyre- 80/100 - 21 51M
Rear tyre- 100/90 - 19 57M

Dimensions
Overall length- 2,175 mm
Overall width- 825 mm
Overall height- 1,285 mm
Seat height- 970 mm
Wheel base- 1,475 mm
Minimum ground clearance- 335 mm
Wet weight (including full oil and fuel tank)- 106 kg
Fuel tank capacity- 6.2 L
Oil tank capacity- 0.95 L

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