Source: Yamaha.

The 2015 Yamaha WR250F, officially unveiled locally on Friday, 17 October, during a presentation at the Australian Motorcycle Grand Prix, is heavily-based upon the championship-winning YZ250F motocross model.

It features the latest revolutionary rearward-slanted, fuel injected, 249cc, DOHC four-stroke engine with four titanium valves, bilateral beam frame, industry-leading KYB SSS suspension, electric starter, aluminum side stand, 18-inch wheel, wide ratio transmission and a sixth gear.

The 2015 WR250F is the perfect bike to tackle the toughest enduros on the planet; the suspension, fuel injection, clutch and engine character have all been carefully chosen to provide the best experience when the riding gets tight and twisty.

The WR250F comes with all the standard features needed to compete and win in enduro events, including a headlight, taillight, skid plate electric radiator fan and enduro computer.

Feature overview:
– All-New for 2015 with a revolutionary rearward-slanted 250cc, liquid-cooled, DOHC four-stroke with four titanium valves based on the 2015 YZ250F, with an added sixth gear and wide ratio transmission, among other modifications, make it perfect for enduro competition.

– Nearly the same bilateral beam frame that is found on the championship winning YZ250F is used on the WR250F. It places the engine and fuel tank close to the center mass of the bike for extremely light and nimble handling character.

– A Keihin 44mm throttle body fuel injection system is tuned for enduro riding ensures smooth throttle response and easy starting in nearly all conditions. Plus the electric start button reduces rider fatigue.

– Industry-leading KYB air/oil separation Speed Sensitive System forks and a KYB rear shock suspension with enduro settings.

– With a 5.7-litre fuel tank, 18-inch rear wheel and enduro spec tires, the WR250F is ready to win right out of the box.

Engine features:
– The revolutionary, rearward slanted, high-performance liquid-cooled four-stroke, four-valve, fuel-injected engine has been tuned for enduro riding.

– The fuel injection system uses 3-D mapped electronic control for the injection of fuel and ignition timing that are optimised for the challenges of endure riding.

– A six-speed wide-ratio transmission is used to improve traction in all types of conditions.

– Push button electric start makes starting the WR250F easy and convenient.

Chassis/Suspension features:
– An all aluminum bilateral beam frame similar to the YZ250F provides strength, lightness and durability for all riding conditions.

– Removable aluminum rear subframe constructed of square-section tube for reduced weight.

– Industry favorite KYB air/oil separate Speed Sensitive System spring forks with Kashima coating and KYB rear shock, also with Kashima coating and featuring a large 50mm piston. Both the forks and rear shock are tuned specifically for enduro riding.

– The clutch plate material, springs, push lever and oil valve are optimized for enduro riding.

Additional features:
– Accessory GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and race conditions in a matter of seconds with the push of a few buttons.

– An onboard Enduro computer is standard and features speedo, odometer, average speed, clock and more.

– The WR250F features a headlight, taillight and skid plate.

– A side stand is standard for added rider convenience

Stay tuned for Australian pricing, availability and specific specifications to be announced.