| YAMAHA WR450F | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Liquid-cooled DOHC 4-stroke, 4 titanium valves | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 449 cm3 | - |
| Bore X Stroke | |
| 3.8x2.4 in OR 97 mm | - |
| Compression Ratio | |
| 12.5:1 | - |
| Horsepower | |
| 58/9000 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 36/7500 lb-ft/RPM OR 49/7500 Nm/RPM | - |
| Fuel System | |
| Yamaha Fuel Injection (YFI) Keihin 44mm | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5-Speed constant-mesh | - |
| Clutch | |
| Wet multiplate | - |
| Final Drive | |
| O-ring chain | - |
| chassis specs | |
| Frame | |
|---|---|
| Aluminium bilateral beam | Aluminium frame |
| Front Suspension | |
| KYB spring-type fork with speed sensitive damping, fully adjustable, 12.2-in wheel travel | - |
| Rear Suspension | |
| KYB single shock, full adjustable 12.5-in wheel travel | - |
| Front Brake | |
| Single hydraulic disc 270mm | - |
| Rear Brake | |
| Single hydraulic disc 245mm | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 85.2 in OR 2164 mm | - |
| Overall Width | |
| 32.5 in OR 826 mm | - |
| Seat Height | |
| 38 in OR 965 mm | - |
| Weelbase | |
| 57.7 in OR 1466 mm | - |
| Ground Clearance | |
| 12.8 in OR 325 mm | - |
| Weight | |
| 271 lbs OR 123 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 2 gallons OR 7.6 L | - |
| Wheelbase | |
| 57.7 in OR 1466 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 80/100-21 | - |
| Rear | |
| 120/90-18 | - |
