The Yamaha WR450F motorcycle was produced between 2011 and 2012. It has a four-stroke, single-cylinder engine with a capacity of 449 cc and a compression ratio of 12.3:1. The bike has both electric and kick starting options, with a maximum power of 58 hp at 9000 rpm and a maximum torque of 5.0 kgf-m at 7500 rpm. The clutch is a wet, multi-disc type, and it has a 5-speed constant mesh transmission. The frame is made of aluminum bilateral beam, with a front suspension of a 48mm upside-down telescopic fork and a rear suspension of swingarm, link suspension, mono-shock with a rear wheel travel of 305 mm. It uses hydraulic brakes with a single 250mm disc 4 piston caliper at the front and a single 245mm disc 2 piston caliper at the rear. The wheels are made of aluminum alloy with laced spokes, with a front tyre size of 80/100-21 51P and a rear tyre size of 120/90-18 65P. The bike has a ground clearance of 335mm and seat height of 960 mm with dry weight of 112.5 kg and wet weight of 122 kg. It has a fuel capacity of 7.2 litres. Overall, the Yamaha WR450F has a powerful engine, good suspension, and reliable brakes making it a suitable choice for competitive off-road riding.
Technical specifications:
Make Model: Yamaha WR450F
| Year | 2011 – 12 |
|---|---|
| Engine | Four stroke, Single cylinder, DOHC, 5 valves |
| Capacity | 449 cc / 27.4 cu in |
| Bore x Stroke | 95 x 63.4 mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 12.3:1 |
| Lubrication | Dry sump |
| Oil Capacity | 1.2 L / 2.5 US pt |
| Exhaust | Single, upswept, under seat |
| Induction | 39mm Keihin FCR flat-slide throttle position sensor |
| Ignition | CDI |
| Starting | Electric & kick |
| Max Power | 58 hp / 42.3 kW @ 9000 rpm |
| Max Torque | 5.0 kgf-m 36.2 ft-lb @ 7500 rpm |
| Clutch | Wet, multi-disc |
| Transmission | 5-Speed, constant mesh |
| Final Drive | Chain |
| Frame | Aluminium bilateral beam |
| Front Suspension | 48mm Upside down telescopic fork |
| Front Wheel Travel | 300 mm / 11.8 in |
| Rear Suspension | Swingarm, link suspension, mono shock |
| Rear Wheel Travel | 305 mm / 12.0 in |
| Front Brakes | Hydraulic single 250 mm disc 4 piston caliper |
| Rear Brakes | Single 245 mm disc 2 piston caliper |
| Wheels | Aluminium alloy, laced spokes |
| Front Tyre | 80/100-21 51P |
| Rear Tyre | 120/90-18 65P |
| Rake | 27 degrees |
| Trail | 115 mm / 4.5 in |
| Dimensions | Length: 2315 mm / 91.1 in Width: 825 mm / 32.5 in Height: 1275 mm / 50.2 in |
| Wheelbase | 1475 mm / 58.1 in |
| Ground Clearance | 335 mm / 13.2 in |
| Seat Height | 960 mm / 37.8 in |
| Dry Weight | 112.5 kg / 268 lbs |
| Wet Weight | 122 kg / 268 lbs |
| Fuel Capacity | 7.2 Litres / 1.9 US gal |
