YAMAHA WR450F (2008-2009) Specs, Performance & Photos

The Yamaha WR450F was an off-road machine manufactured by Yamaha from 1998 under the WR400F designation and was part of the WR series that comprised off-road motorcycles with different engine displacements.

In 2009, the Japanese maker launched the Yamaha WR450F, a motorcycle part of the fourth generation. The bike was manufactured over several generations and featured various modifications in the technical and performance department.

The 2009 WR450F came equipped from the factory with standard features, such as a small headlight integrated into a small cowl, a high-mounted front fender, an engine guard, an aluminum frame and swingarm, and lightweight wire-spoke wheels.

The bike's aluminum frame was fitted with a fully-adjustable Kayaba shock absorber on the rear with 318 mm wheel travel. On the front, the suspension was handled by a 46 mm adjustable Kayaba inverted telescopic fork, delivering excellent handling capabilities.

As for the braking power, the wire-spoke wheels featured a four-piston caliper with a 250 mm disc on the front and a dual-piston caliper with a 245 mm disc on the rear, providing excellent stopping power.

In the power department, the 2009 Yamaha WR450F packed the same 449cc four-stroke single-cylinder liquid-cooled engine fed by a Keihin carburetor, boasting 58 hp with a peak force at 9,000 rpm and 49 Nm (36 lb-ft) torque at 7,000 rpm.

The engine power was handled by a five-speed constant mesh transmission sending it to the rear wheel through an O-ring sealed final chain drive.