Segment: Enduro/Offroad
Production years: 2009, 2010
The Yamaha WR450F was a small off-road motorcycle manufactured by Yamaha over several generations. The bike was part of the WR series in Yamaha's range, comprised of motorcycles with different engine displacements.
In 2010, Yamaha launched the WR450F, an off-road machine in its fourth generation, which packed a lightweight aluminum frame and swingarm, a slim bodywork designed for excellent maneuverability, and the performance of the Yamaha YZ450F machine.
The bike came equipped with standard features right from the factory, such as a high-mounted front fender and exhaust system, a small headlight integrated into a small cowl, a single seat, an aluminum frame and swingarm, and lightweight aluminum wheels.
As for the power figures, the 2010 Yamaha WR450F took its muscles from a 449cc four-stroke liquid-cooled single-cylinder engine, delivering a power output of 58 hp with a peak forge at 9,000 rpm and 49 Nm (36 lb-ft) torque at 7,000 rpm.
The bike's power was handled by a five-speed constant mesh manual transmission spinning the rear wheel through an O-ring sealed final chain drive.
For stopping power, the wire-spoke wheels were fitted with a four-piston caliper, a 250 mm disc on the front, and a 245 mm disc with a dual-piston caliper on the rear, offering excellent braking performance.
In the suspension department, the 2010 Yamaha WR450F was equipped with a fully-adjustable Kayaba shock absorber on the rear and a 46 mm adjustable inverted Kayaba telescopic fork on the front.
engine specs | Type: | liquid-cooled DOHC 4-stroke; 5 titanium valves | Displacement: | 449 cm3 | Bore X Stroke: | 3.7x2.5 in OR 94 mm | Compression Ratio: | 12.3:1 | Horsepower: | 58/9000 KW(hp)/RPM | Torque: | 36/7000 lb-ft/RPM OR 49/7000 Nm/RPM | Fuel System: | Keihin FCR-MX39, flat-slide w/throttle position sensor |
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transmission specs | Gearbox: | 5 speed, manual, wide ratio | Clutch: | Multiplate wet clutch | Primary Drive: | - | Final Drive: | O-ring chain |
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chassis specs | Frame: | Aluminium | Front Suspension: | 48mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping; 11.8 in. travel | Rear Suspension: | Kayaba single shock w/adjustable preload, compression and rebound damping & separate hi/lo-speed compression adjuster; 12 in. travel | Front Brake: | 250mm floating disc | Rear Brake: | 245mm disc |
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dimension specs | Overall Length: | 85.6 in OR 2174 mm | Overall Width: | 32.5 in OR 826 mm | Seat Height: | 38.6 in OR 980 mm | Wheelbase: | - | Ground Clearance: | 14.3 in OR 363 mm | Weight: | 273 lbs OR 124 kg | Fuel Capacity: | 2.1 gallons OR 7.9 L |
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tyres specs | Front: | 80/100-21 | Rear: | 110/100-18 |
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power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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