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Specifications Yamaha WR250X

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Specifications on the machine WR250X has Liquid-cooled, 250cc, DOHC, 4-valve, 4-stroke powerplant with super light titanium intake valves and electronic fuel injection.

Free from the complexity of the decompression system, which automatically ensures a quick first step and reduce the size of a large and heavy battery. Magnesium cylinder head cover that light can help reduce the weight of the motor.

Downdraft-type straight design intake port, which provides the most efficient flow for maximum engine performance. Intake side and lightweight titanium valves, reducing the load spring to lower the weight more than 40% (compared to steel valves). Titanium valves reduce friction wear, Intake Valve 30mm diameter, 24.5mm in diameter while the exhaust valve. STEEP valve angle 11.5 degrees with the side of the intake side, and 12.5 degrees on the exhaust, which can produce slick combination of the engine.

CR9EK NGK Spark plugs are located in the center of the combustion chamber. Well controlled combustion and provide a response at large throttle openings. Ceramic composite cylinder provides excellent heat dissipation for the power delivery more consistent and able to reduce oil consumption.