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Forward thinking

This is the bike that has totally revolutionized the 250 class. With its radical reverse cylinder head, rearward sloping cylinder and underseat fuel tank, the YZ250F is the way ahead for motocross design.

Shortly after its debut this bike took AMA 250 Supercross and Motocross titles, as well as a WMX world crown and multiple GP race wins. And to underline Yamaha's policy of continuous development, we've made a range of technical improvements designed to keep the YZ250F on top.

Featuring important new engine, transmission and chassis changes, the latest YZ250F is built to give even better performance and useability, making it the bike of choice for amateurs and pro riders.


  • NEW - Lightweight piston and high-spec con rod
  • NEW - Crank and balancer design, ECU
  • NEW - Refined clutch and gear shifting
  • NEW - Refined suspension settings
  • NEW - Large diameter 270mm front brake
  • 250cc liquid-cooled DOHC 4-valve engine
  • Reverse cylinder head with front-facing inlet
  • Mass centralized design for agile handling
  • Aluminum bilateral-beam frame
  • Air-Oil-Separate (AOS) upside-down front forks
  • Linked-type Monocross suspension
  • Grand Prix race-winning technology



Engine type liquid-cooled, 4-stroke, DOHC, 5-valve, Forward-inclined single cylinder
Displacement 250cc
Compression ratio 13,5 : 1
Bore x stroke 77,0 mm x 53,6 mm
Ignition System CDI
Starter system Kick
Transmission system Constant Mesh, 5-speed
Final transmission Chain
Lubrication Dry sump
Fuel tank capacity 6,4 litres
Oil capacity 1,2 litres
Front suspension system Telescopic forks
Rear suspension system Swingarm, (link suspension)
Front brake Dual Discs, Ø 250 mm
Rear brake Single Disc, Ø 245 mm
Front tyre 80/100-21-51M
Rear tyre 100/90-19 57M
Length x Width x Height (mm) 2.168 x 825 x 1.304 mm
Seat height (mm) 991 mm
Wheel base (mm) 1.473 mm
Minimum ground clearance (mm) 377 mm