Yamaha RS 200 (1979-81) vs Yamaha SR 400 (2018)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | RS 200 | SR 400 |
| Years: | 1979-81 | 2018 |
| Engine: | Two stoke, parallel twin | Four stroke, single cylinder, SOHC, 2 valves per cylinder. |
| Capacity: | 195 cc / 11.8 cu-in | 399 cc / 24.3 cu-in |
| Bore x Stroke: | 52 x 46 mm | 87 х 67.2 mm |
| Cooling System: | Air cooled | Air cooled |
| Compression Ratio: | 6.5:1 | 8.5:1 |
| Lubrication: | Autolube | Dry sump |
| Induction: | Single Mikuni, VM 24SS Carburetor | Fuel injection |
| Ignition: | Battery | TCI |
| Starting: | Electric & Kick | Kick |
| Max Power: | 17.7 hp / 13.0 kW @ 7500 rpm | 27 hp / 17.1 KW @ 7000 rpm |
| Max Torque: | 18.3 Nm / 1.87 kg-m @ 6000rpm | 27.4 Nm / 6.3 kgf-m @ 6500 rpm |
| Clutch: | Wet multi-plate | Wet, Multiple Disc |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic fork |
| Rear Suspension: | Dual shocks | Dual shocks |
| Front Brakes: | Drum | Single disc |
| Rear Brakes: | Drum | Drum |
| Front Tyre: | 2.75-17 | 3.50-19 |
| Rear Tyre: | 3.00-17 | 4.00-16 |
| Dimensions: | Length 1950 mm / 76.7 in Width 725 mm / 28.5 in Height 984 mm / 38.7 in | Length 2085 mm / 82.1 in Width 750 mm / 29.5 in Height 1090 mm / 43.1 in |
| Wheelbase: | 1245 mm / 49.0 in | 1410 mm / 55.5 in |
| Seat Height: | 765 mm / 30.1 in | 790 mm / 30.9 in |
| Ground Clearance: | 150 mm / 5.9 in | 130 mm / 5.1 in |
| Fuel Capacity: | 11.5 Litres / 3.0 us gal | 12 Litres / 3.2 US gal |