Cool-Motorcycles reviews Yamaha Off-Road YZ250 2008

Yamaha off-road YZ250 2008

The legendary two-stroke Supercross winner is more potent than ever. 500 grams off the front end makes this the quickest turning, best-handling YZ250 ever. A light, aluminum frame housing a patented YPVS™ Power valve-equipped ripper of an engine results in an awesome power-to-weight ratio. Ready to race out-of-the-crate, complete with a ProTaper aluminum handlebar, titanium footpegs, gripper seat and Excel rims.

New for 2008

• New, YZ250F-style front-brake caliper (-220 grams) and light, wave-type discs (-70 grams) front and (-70 grams) rear remove unsprung weight and provide excellent stopping power. A new, pushrod-type front master cylinder with a smaller piston and a redesigned brake lever serve up great feel and braking power.
• Modifying thickness of both inner and outer fork tubes in the 48mm inverted fork result in a weight reduction of 200 grams. Revised damping settings provide fantastic bump absorption and comfort.
• 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.
• Revised rear shock settings complement the ones in the fork.

Engine

• 249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband.
• Patented YPVS™ power-valve system combines crisp, hard-hitting, bottom-end acceleration with strong midrange and eye-opening top-end.
• Special-design carbon fiber reed-valve petals improve throttle response and engine performance across the entire rpm range.
• Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
• Primary kickstarter ensures smooth, easy starting action and reduced weight.
• Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
• 38mm Keihin PWK carburetor with power jet and throttle position sensor (TPS) ensures precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
• Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband.
• Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.

Chassis/Suspension

• A carefully engineered, advanced aluminum frame and swingarm give the YZ250 the best handling in the 250 class.
• Speed-Sensitive System 48mm Kayaba fork tubes move the transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed instead of position. Along with a bigger base valve hole, the result is a smooth ride and super-precise handling.
• Removable aluminum rear subframe constructed of square-section tubing for reduced weight.
• Rear, fully adjustable Kayaba shock features a super-light titanium shock spring and reduced-friction Kashima coating of internals. 12.4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort all add up to fantastic rear wheel control and a sweet ride.
• Lightweight front and rear calipers with aluminum pistons and anti-bubble front master cylinder, 250mm fully floating front and 245mm rear discs, deliver strong stopping power with progressive feel.
• Lightweight 21-inch front and 19-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance and handling.
• Tapered rear wheel spacers ease sliding the rear wheel into place for quicker tire changes.
• Premium Dunlop knobbies offer race-spec traction and wear.

Additional Features

• Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.
• Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low handlebar provide excellent movement and more comfortable ergonomics for riders.
• Wide-diameter fuel tank cap ensures easier usage, while larger tank opening means faster, hassle-free refueling.
• A light and strong ProTaper aluminum handlebar in adjustable mounts means comfort and control.
• Use of light, box-head bolts throughout the chassis eases maintenance while reducing weight and increasing performance.
• Repackable exhaust silencer.
• Durable, comfortable handlebar grips.

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Cool-Motorcycles reviews Yamaha Off-Road YZ250 2008