New Yamaha WR250F 2011

2011 Yamaha WR250F

General review, specifications and features for the New Yamaha WR250F 2011.



2011 Yamaha WR250F Specifications

Engine Type: 250cc liquid-cooled DOHC 4-stroke, 5 titanium valves

Bore x Stroke: 77.0mm x 53.6mm

Compression Ratio: 12.5 : 1

Fuel Delivery: Keihin® FCR 37

Ignition: CDI

Transmission: Constant-mesh 5-speed, multiplate wet clutch

Final Drive: Chain Drive

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: 256 lb



2011 Yamaha WR250F Features

• Engine Features - The New Yamaha WR250F 250cc 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 Features - The Yamaha WR250F that 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-style 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. The New Yamaha WR250F equipped with premium Dunlop® knobbies offer unbeatable, competition-spec traction and excellent wear.

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