2009 Yamaha WR250R Specs – Engine Features Picture and Video
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The 2009 Yamaha WR250R is a dual sport style motorcycle powered by 250 cc, 4-stroke, liquid-cooled, DOHC, 4-valve, single cylinder engine, 77 x 53.6 mm bore and stroke, 11.8:1 compression ratio, combined with Mikuni 38mm throttle body F.I. fuel injection system and 6-speed transmission system generating 2.5kg-m (17.7 ft-lb) maximum torque at 8,500 rpm and 22.6 kW (30.7 PS) maximum power at 10,000 rpm. The 2009 Yamaha WR250R features: Double overhead cam, 4-valve combustion chamber features a compact “pent-roof” design for maximum breathing efficiency; Dual electrode NGK CR9EK spark plug; The crankcases feature a “tri-axis” design for the crankshaft, main and drive axles; Lightweight, high strength, short-skirt, forged aluminum piston; 38mm, Mikuni electronic throttle body type fuel injection system is used (38EIS); Compact 16 bit ECU features 3D ignition mapping to accommodate the engine power characteristics; and many more advanced technologies.
Below table contains detail technical specification and features of 2009 Yamaha WR250R engine, transmission, suspension, brake, wheel, tire, drive train, and physical dimension.
2009 Yamaha WR250R Engine Specs and Transmission Features
| Engine type | Liquid cooled, 4-stroke, DOHC, 4-valve, forward inclined single cylinder |
| Displacement | 250 cc |
| Bore x stroke | 77.0 X 53.6 mm |
| Compression ratio | 11.8:1 |
| Maximum power | 22.6 kW (30.7 PS) @ 10,000 rpm |
| Maximum torque | 23.7 Nm (2.42 kg-m) @ 8,000 rpm |
| Lubrication system | Wet sump |
| Carburettor | Mikuni 38mm throttle body F.I. |
| Clutch type | Wet, multiple-disc coil spring |
| Ignition system | Transistor Controlled Ignition |
| Starter system | Electric |
| Transmission system | Constant mesh, 6-speed |
| Final transmission | Chain |
| Fuel tank capacity | 7.6 L |
| Oil tank capacity | 1.5 L |
2009 Yamaha WR250R Chassis Suspension and Brake Specs & Features
| Chassis | Semi double cradle |
| Front suspension system | Telescopic forks |
| Front wheel travel | 270 mm |
| Rear suspension system | Swingarm (link suspension) |
| Rear travel | 270 mm |
| Front brake | Single disc, Ø 250 mm |
| Rear brake | Single disc, Ø 230 mm |
| Front tyre | 80/100-21M/C 51P |
| Rear tyre | 120/80-18M/C 62P |
2009 Yamaha WR250R Physical Dimension Specs & Features
| Length | 2,180 mm |
| Width | 810 mm |
| Height | 1,230 mm |
| Seat height | 930 mm |
| Wheel base | 1,420 mm |
| Minimum ground clearance | 300 mm |
| Dry weight | 126 kg |
Watch the 2009 Yamaha WR250R features video from Youtube.com
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Tags: Brake, Chassis, Dual-Sport, Engine, Frame, Suspension, Tire, Transmission, Wheel
