Engine and Transmission
Displacement: 250cc
Type: liquid-cooled DOHC 4-stroke; 5 titanium valves
Bore x Stroke: 77.0mm x 53.6mm
Compression Ratio: 12.5:1
Carburetion: Keihin® FCR 37
Ignition: CDI
Transmission: Constant-mesh 5-speed; multiplate wet clutch
Final Drive: Chain Drive
Chassis and Dimensions
Suspension/Front: Inverted fork; fully adjustable, 11.8-in travel
Suspension/Rear: Single shock; fully adjustable, 12.2-in travel
Brakes/Front: Hydraulic single disc brake, 250mm
Brakes/Rear: Hydraulic single disc brake, 245mm
Tires/Front: 80/100-21-51M
Tires/Rear: 100/100-18-59M
Length: 85.2 in
Width: 32.5 in
Height: 51.1 in
Seat: Height 38.6 in
Wheelbase: 58.3 in
Ground Clearance: 14.4 in
Fuel Capacity: 2.1 gal
Wet Weight: 260 lb
Key Features:
YZ-bred advanced aluminum frame—carefully engineered from castings, forgings and extrusions—enhances handling while retaining legendary Yamaha feel and characteristics.
Highly evolved high-revving five-titanium-valved engine starts with the push of a button.
Cool digital enduro computer offers speedometer, clock, tripmeter, etc., in basic mode—or pace management functions such as timer, distance-compensating tripmeter, average speed, etc., when switched to race mode.
The WR250F is green sticker approved for California.
Engine:
249cc liquid-cooled, DOHC four-stroke with five titanium valves delivers excellent low- and midrange power, with high over-rev capacity and crisp, linear throttle response.
Special WR camshafts, carburetion, and exhaust and ignition systems work together to produce a quick-revving engine with great low- and midrange power.
37mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) ensures ultra-precise fuel/air mixing and lightning-quick throttle response.
Close-ratio five-speed gearbox tackles almost any terrain.
“No tools” airbox uses hinge-type quick-open lid. Battery rides low for excellent handling.
Digital CDI ignition system delivers more precise spark and monitors engine speed to ensure optimal timing for fast, strong response during hard acceleration.
Large-capacity radiators with reinforcements ensure maximum cooling efficiency with great strength.
Lightweight exhaust system maximizes engine power and allows hassle-free replacement of oil filter.
Aluminum muffler with USFS-approved spark arrestor looks trick and keeps things light.
Works-style clutch lever features oversize barrel adjuster for easy, on-the-fly adjustability of lever/cable play.
Electric start ensures easy restarts.
Chassis/Suspension:
YZ-inspired aluminum frame reduces weight while optimizing mass centralization. An extensively tested assembly of aluminum forgings, castings and extrusions, the WR frame retains legendary Yamaha handling and response.
Removable aluminum rear subframe constructed of square-section tube for reduced weight.
Fully adjustable air-/oil-separate 48mm fork tubes deliver precise, fade-free handling; fork protectors provide excellent tube protection.
Tapered swingarm uses YZ-style linkage for controlled, compliant rear suspension action. Axle and holders reduce weight in a critical area.
The KYB® shock provides 12.2 inches of travel with adjusters for high- and low-speed compression damping, rebound and spring preload—and features a larger piggyback reservoir for excellent damping and fade resistance.
Wave disc brake rotors front and rear reduce unsprung weight and provide excellent performance. Front and rear calipers with aluminum pistons deliver strong stopping power with progressive feel.
Lightweight 21-inch front and 18-inch rear rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance.
Premium Dunlop® knobbies offer unbeatable, competition-spec traction and excellent wear.
Additional Features:
Cool YZ-derived bodywork and a thick seat look great and feel excellent on long rides.
ProTaper aluminum handlebar in forged triple clamp shaves weight and increases comfort.
Wide footpegs for great comfort.
Slim-design, lightweight fuel tank holds 2.1 gallons.
One-piece, high-strength, plastic skid plate shaves weight and offers great protection.
Lightweight, 35-watt headlight and sweet LED taillight maximize visibility and draw less current.
Adjustable front brake lever.
Repackable aluminum muffler shaves weight.
Front wheel collar makes front wheel removal quick and easy.
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