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- 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.
- New 6Ah battery (up from 4Ah) for more cranking power.
- A fluorination treatment of the plastic fuel tank reduces gas permeation — good for the environment and the EPA — and new, FKM breather and fuel hoses accomplish the same thing.
- A 120-gram-lighter fork protector, lighter axle and axle bracket, lighter wheel collar and the new front brake add up to a 500-gram-lighter front end, and even quicker, lighter handling.
- New-shaped lightweight brake pedal for enhanced performance and feel.
- 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 TPS tuning, 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.
- 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 Kayaba 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.
- New, 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 Dunlops offer unbeatable, competition-spec traction and excellent wear.
- 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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