MX2 - Yamaha YZ250F

The YZ250F has now enjoyed more than a decade as one of the prime competition models of MX2/250SX/250MX at the highest level. On its inception in 2001 it instantly established a new creed of motocrosser - the 250cc four-stroke - paving the way for the latest generation of MX2-GP class machines. In 2011 the YZ250FM factory bike at Grand Prix level was a works prototype with an advanced fuel injection system and the development and work completed by Factory Yamaha through two seasons of action has helped forge the latest and most exciting production version of the YZ250F.

2014 and 2015 were two other memorable years in the life span and trajectory of the YZ250F. The motorcycle was completely overhauled to bring the machine closer in technology, components and spirit to its bigger brother, the YZ450F. The rear-facing, ‘snaking’ exhaust, fuel injected engine concept was the most significant revision but a new chassis to compliment the great tractability and centralisation (not to mention a slim and athletic ‘new look’) brought the bike right up to 21st century racing and track presence.

Engine type:Liquid-cooled, 4-stroke, DOHC, 4-valves
Bore x stroke:77.0 mm x 53,6 mm
Compression ratio:13.5 : 1
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

Frame:Semi double cradle
Front suspension system:Upside-down telescopic, KYB Factory spring front fork
Front travel:310 mm
Caster angle:26º 50
Trail:118 mm
Rear suspension system:Swingarm, (link suspension) KYB Factory rear shock
Rear travel:315 mm
Front brake:Hydraulic single disc, Ø 270 mm
Rear brake:Hydraulic single disc, Ø 245 mm
Front tyre:80/100-21
Rear tyre:110/90-19

Overall length:2,170 mm
Overall width:825 mm
Overall height:1,280 mm
Seat height:965 mm
Wheel base:1,475 mm
Minimum ground clearance:330 mm
Wet weight (including full oil and fuel tank):98.5 kg
Fuel tank capacity:7.5 litres
Oil capacity:0.9 litres