Wiktor Wise
The Yamaha WR450F is an off-road motorcycle that was first introduced in 1998. Over the years, the WR450F has undergone several modifications and updates, including changes to its engine displacement, frame, and suspension. The 2009 Yamaha WR450F is part of the fourth generation of the WR series and comes equipped with a range of standard features, including a small headlight, a high-mounted front fender, and an aluminum frame. One of the key questions that potential buyers may have about this model is whether it has an electric start function.
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What You'll Learn
The 2009 Yamaha WR450F has a push-button start
The 2009 Yamaha WR450F is an off-road motorcycle that comes with a push-button start. This feature is in addition to the bike's powerful and reliable high-revving five-titanium-valved engine. The WR450F was first introduced in 1998 as part of the WR series, which included motorcycles with different engine displacements. The 2009 model is part of the fourth generation of WR450F motorcycles, which were manufactured from 2007 to 2011.
The 2009 Yamaha WR450F has a 449cc four-stroke single-cylinder liquid-cooled engine, delivering 58 hp at 9,000 rpm and 49 Nm (36 lb-ft) torque at 7,000 rpm. The engine power is handled by a five-speed constant mesh transmission, with an O-ring sealed final chain drive. The bike also features an advanced aluminium frame, a digital enduro race computer with a speedometer, clock, and tripmeter, and is green sticker approved for California.
The 2009 WR450F came equipped with standard features such as a small headlight integrated into a small cowl, a high-mounted front fender, an engine guard, an aluminium frame, and lightweight wire-spoke wheels. The front suspension is handled by a 46 mm adjustable Kayaba inverted telescopic fork, while the rear suspension features a fully adjustable Kayaba shock absorber with 318 mm of wheel travel.
The 2009 Yamaha WR450F is a highly sought-after model, with many riders expressing their desire for this particular version. The bike's push-button start, performance, and handling capabilities make it a popular choice among enthusiasts.
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It has a powerful 449cc engine
The 2009 Yamaha WR450F is an off-road motorcycle that is part of the fourth generation of the WR series. It has a powerful 449cc engine, delivering an output power of 58 hp at 9,000 rpm and 49 Nm (36 lb-ft) torque at 7,000 rpm. The engine is a four-stroke, single-cylinder, liquid-cooled design fed by a Keihin carburettor. The engine power is handled by a five-speed constant mesh transmission, with a final chain drive.
The WR450F has been manufactured by Yamaha since 1998, originally under the WR400F designation. The 2009 model features various modifications and improvements over previous generations, including a new high-revving five-titanium-valved engine, an advanced aluminium frame, and a push-button start. The aluminium frame is fitted with a fully adjustable Kayaba shock absorber on the rear, delivering excellent handling capabilities.
The WR450F is designed as a racing motorcycle, with a headlight and lighting coil, softer suspension, a kickstand, lower noise specifications, and larger radiators. The WR in the name stands for a wide-ratio gearbox, which is common on enduro or trail bikes. The 2009 model also features new graphics and is green sticker approved for California.
The Yamaha WR450F has a strong reputation for its performance and handling. With its powerful 449cc engine, it offers a high-revving, thrilling riding experience. The engine's high output power and torque provide rapid acceleration and strong uphill climbing capabilities. The five-speed transmission allows for flexible riding, with the ability to easily adjust to different terrain conditions.
The WR450F's engine has been continually refined by Yamaha, with updates to the balancer, cylinder head, and camshafts. The liquid-cooling system ensures efficient temperature management, even during extended high-rpm usage. The Keihin carburettor provides precise fuel delivery, contributing to the engine's responsiveness and reliability. Overall, the 449cc engine in the 2009 Yamaha WR450F is a testament to Yamaha's engineering prowess, offering a potent combination of power, performance, and durability.
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The WR450F is an off-road motorcycle
In 2009, Yamaha launched the fourth generation WR450F, featuring a range of technical and performance upgrades. This model retained the 449cc four-stroke single-cylinder liquid-cooled engine, delivering 58 hp at 9,000 rpm. The engine power was transmitted through a five-speed constant mesh transmission to the rear wheel via an O-ring sealed final chain drive.
The 2009 WR450F came with standard features such as a small headlight integrated into a cowl, a high-mounted front fender, an engine guard, and an aluminium frame with a fully adjustable rear shock absorber and telescopic front fork suspension. The aluminium frame and swingarm, along with lightweight wire-spoke wheels, contributed to improved handling.
The WR450F's off-road capabilities were further enhanced by its wide-ratio gearbox, which is common in enduro or trail bikes, providing more controllable power for off-road riding. The 2009 model also introduced new graphics, showcasing Yamaha's continuous development of the WR series.
The WR450F has undergone several generations of updates, with the Japanese maker consistently refining its off-road performance, handling, and technical features, making it a versatile and powerful motorcycle in its segment.
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It has an aluminium frame
The 2009 Yamaha WR450F is an off-road motorcycle that features an aluminium frame. This lightweight frame is fitted with a fully adjustable Kayaba shock absorber at the rear, delivering 318mm of wheel travel. The front suspension, meanwhile, is handled by a 46mm adjustable Kayaba inverted telescopic fork. This combination provides excellent handling capabilities for the bike.
The aluminium frame on the 2009 Yamaha WR450F is a notable feature, offering both performance and aesthetic benefits. Aluminium is chosen for its favourable strength-to-weight ratio, contributing to the overall lightweight design of the motorcycle. This lightweight construction enhances the bike's handling characteristics, making it more agile and responsive. The reduced weight also improves acceleration and fuel efficiency.
The aluminium frame of the 2009 Yamaha WR450F is designed to be slim and sleek, complementing the overall styling of the motorcycle. This slim bodywork not only looks good but also improves the rider's control and manoeuvrability. The lightweight aluminium construction, combined with the advanced suspension system, ensures a smooth and responsive ride.
The 2009 Yamaha WR450F's aluminium frame is a significant upgrade from previous models, which traditionally utilised steel frames. Aluminium offers higher strength-to-weight ratios than steel, resulting in a lighter yet stiffer frame. This stiffness enhances the bike's overall rigidity, improving handling and stability, especially during high-speed cornering or when navigating rough terrain.
The choice of aluminium for the frame also has maintenance and durability advantages. Aluminium is known for its corrosion resistance, which helps maintain the bike's appearance and structural integrity over time, especially when exposed to varying weather conditions and terrain. Additionally, aluminium's lightweight nature makes it easier to handle and manoeuvre the motorcycle, both on and off the road.
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The WR450F has excellent handling capabilities
The 2009 Yamaha WR450F is an off-road motorcycle that is part of the fourth generation of the WR series. The WR450F has excellent handling capabilities due to several key features. Firstly, the motorcycle has a lightweight aluminium frame, which improves handling by reducing the overall weight of the bike. This aluminium frame is fitted with a fully adjustable Kayaba shock absorber on the rear, delivering 318 mm of wheel travel. Additionally, the front suspension is handled by a 46 mm adjustable Kayaba inverted telescopic fork.
The WR450F's engine has also been designed with handling in mind. The 449cc four-stroke single-cylinder liquid-cooled engine provides ample power, with 58 hp at 9,000 rpm and 49 Nm (36 lb-ft) of torque at 7,000 rpm. This power is handled by a five-speed constant mesh transmission, which sends the power to the rear wheel through an O-ring sealed final chain drive. The low-end torque on these trail bikes is particularly impressive, providing excellent acceleration and traction when navigating tight corners or uneven terrain.
The WR450F's handling capabilities have been a focus of Yamaha's design and have seen continuous improvements over the years. The 2012 model, for example, featured a revised motor position, further enhancing the bike's handling. Additionally, the 2016 WR450F introduced the reverse slant, 4-valve, fuel-injected motor, which was previously available in the YZ440F, while maintaining the electric start function.
The WR450F's excellent handling capabilities make it a versatile and agile off-road motorcycle, suitable for a wide range of riding conditions and terrains. With its powerful engine, lightweight frame, and advanced suspension system, the 2009 Yamaha WR450F offers a smooth and responsive riding experience, making it a popular choice for enthusiasts and adventurers alike.
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Frequently asked questions
Yes, the WR450F has electric start.
The WR450F also has a push-button start. To start the bike, you can hold the choke to the divot point and then use the electric start for about 3 seconds, stop, and use the electric start again.
The 2009 WR450F has a powerful and reliable high-revving five-titanium-valved engine, a high-mounted front fender, an engine guard, a aluminium frame, and lightweight wire-spoke wheels.
