Yamaha WR 400F (1998-00) vs Yamaha RD 200 (1979) vs Yamaha XT660R (2004) vs Yamaha V-Max (2009)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | WR 400F | RD 200 | XT660R | V-Max |
| Years: | 1998-00 | 1979 | 2004 | 2009 |
| Engine: | Four stroke, single cylinder, DOHC, 5 valve | Two stroke, torque induction, parallel twin | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, V-four, DOHC, 4 valve per cylinder. |
| Capacity: | 399 cc / 24.3 cu-in | 195 cc / 11.8 cu-in | 659 cc/ 40.2 cu-in | 1679 cc / 102.4 cu-in |
| Bore x Stroke: | 92.0 x 60.1mm | 52 х 46 mm | 100 x 84 mm | 90 x 66 mm |
| Cooling System: | Lliquid cooled | Air cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 12.5:1 | 7.1:1 | 10.0: 1 | 11.3:1 |
| Induction: | Keihin 39mm FCR, accelerator pump, throttle positioning sensor | 2x Y20P Carburetors | Fuel injection, 44 mm throttle body | Mikuni 48mm fuel injection |
| Ignition: | CDI | Battery coil | TCI | TCI |
| Starting: | Kick | Electric & Kick | Electric | Electric |
| Max Power: | 48 hp / 35.3 kW @ 8000 rpm | 20 hp / 14.7 kW @ 8000 rpm | 33.8 kW / 48 hp @ 6000 rpm | 147.2 kW / 200 hp @ 9000 rpm |
| Max Torque: | 39 Nm / @ 7500 rpm | 1.9 kgf-m / 8.6 Nm @ 7000 rpm | 58.4 Nm / 5.7 kgf-m @ 5250 rpm | 166.8 Nm / 17.0 kgf-m @ 6500 rpm |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 5 Speed with slipper clutch |
| Final Drive: | Chain | Chain | Chain | Shaft |
| Front Suspension: | Inverted 46mm Kayaba forks with | Telescopic forks | 43 mm Telescopic forks, | 52mm Telescopic forks |
| Rear Suspension: | Monocross Kayaba | Dual shocks | Oscillating arm standard Monocross. 200mm wheel travel | Swingarm Link-type suspension |
| Front Brakes: | Single 245mm disc 4 piston caliper | Single 245 mm disc | Single 298mm disc 2 piston caliper | 2x 320mm discs |
| Rear Brakes: | Single 220mm disc 2 piston caliper | Drum | Single 245mm disc 1 piston caliper | Single 280mm disc |
| Front Tyre: | 80/100-21 | 2.75-18-4PR | 90/90- 21 | 120/70 R18 |
| Rear Tyre: | 110/100-18 | 3.25-18-4PR | 130/80–17 | 200/50 R18 |
| Wheelbase: | 1480 mm / 58.3 in | 1240 mm / 48.8 in | 1505 mm / 59.3 in | 1700 mm / 66.9 in |
| Seat height: | 991 mm / 39.0 in | 780 mm / 30.7 in | 865mm / 34.1 in | 775 mm / 30.5 in |
| Ground Clearance: | 373 mm / 14.7 in | 155 mm / 6.1 in | 210 mm / 8.3 in | 140 mm / 5.5 in |
| Fuel Capacity: | 8 Litres / 2.1 US gal | 11.5 Litres / 3.0 US gal | 15 Litres / 3.3 US gal | 15 Litres / 4.0 US gal |