The revolutionary front-intake/rear-exhaust, liquid-cooled, fuel-injected, four-stroke engine has been developed for enduro competition. Intake and exhaust ports work with a high compression piston for a wide spread of power without losing top-end performance.
Tuned specifically for the WR250F, the lightweight aluminium, bilateral beam frame and engine mounts have been designed with flex characteristics to improve bump absorption, traction, and cornering performance.
Settings on the industry-leading, fully adjustable KYB coil spring-type fork with enhanced speed-sensitive damping have been revised to suit the machine and off-road conditions. And the link-type rear suspension features a KYB shock with revised damping characteristics to match the chassis.
The high performance braking system provides exceptional stopping power and control through high-spec componentry, including a rigid front caliper with larger diameter pistons, aggressive brake pad compound and a 270mm front rotor. The rear brake gets a lightweight rear caliper and hanger with a 240mm rear rotor to reduce unsprung weight.
A bar-mounted dual engine map switch has been adopted and positioned next to the left lever to enable changes in the engine power delivery characteristics mid-race. This switch allows the rider to select one of two engine maps on the fly at the press of a button to cater for changes in the riding environment. This means that when the going gets loose, steep or muddy – high traction can be accessed at the press of a button.
The filter element features reduced airflow resistance and intake noise combined with increased reliability. The filter and the length of the intake funnel contribute to an excellent feeling of traction and linear characteristics during acceleration and deceleration. Plus, dust filtering capability is increased by adding rubber seals to the centre positioning pin.
WR250F includes a multi-function display featuring a speedometer, trip information and convenient low fuel and engine warning indicators.
Riders can adjust their engine performance straight from their smartphone using the onboard wireless connectivity through the free of charge Yamaha Power Tuner app. Once settings are dialled-in, you can choose between two user-defined ECU maps on the fly via the handlebar mounted dual-mode engine map switch.
Special FIM spec Dunlop® EN91 tyres maximise traction while delivering excellent durability.