Yamaha SR 400 (1988-92) vs Yamaha SR 400 (1978-80)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | SR 400 | SR 400 |
| Years: | 1988-92 | 1978-80 |
| Engine: | Four stroke, single cylinder, SOHC, 2 valves per cylinder. | Four stroke, single cylinder, SOHC, 2 valves per cylinder. |
| Capacity: | 399 cc / 24.3 cu-in | 399 cc / 24.3 cu-in |
| Bore x Stroke: | 87 х 67.2 mm | 87 х 67.2 mm |
| Compression Ratio: | 8.5:1 | 8.5:1 |
| Cooling System: | Air cooled | Air cooled |
| Oil Capacity: | 2.4 Litres | 2.4 Litres |
| Lubrication: | Dry sump | Dry sump |
| Induction: | BSR33 carburetor | BSR33 carburetor |
| Ignition: | CDI | CDI |
| Starting: | Kick | Kick |
| Max Power: | 27 hp / 17.1 KW @ 7000 rpm | 27 hp / 17.1 KW @ 7000 rpm |
| Max Torque: | 27.4 Nm / 6.3 kgf-m @ 6500 rpm | 27.4 Nm / 6.3 kgf-m @ 6500 rpm |
| Clutch: | Wet, Multiple Disc | Wet, Multiple Disc |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Frame: | Steel Double Cradle | Steel Double Cradle |
| Front Suspension: | Telescopic fork | 35mm Telescopic fork |
| Front Wheel Travel: | 111 mm / 4.3 in | 105 mm / 4.1 in |
| Rear Suspension: | Dual shocks | Dual shocks, 5-way adjustable preload |
| Front Brakes: | Single disc | Single disc |
| Rear Brakes: | Drum | Drum |
| Front Tyre: | 3.50-19 | 3.50-19 |
| Rear Tyre: | 4.00-16 | 4.00-16 |
| Rake Caster Angle: | 27º | 27º |
| Trail: | 111 mm / 4.4 in | 111 mm / 4.4 in |
| Wheelbase: | 1410 mm / 55.5 IN | 1410 mm / 55.5 IN |
| Seat Height: | 790 mm / 30.9 in | 790 mm / 30.9 in |
| Ground Clearance: | 130 mm / 5.1 in | 130 mm / 5.1 in |
| Wet Weight: | 174 kg / 384 lbs | 174 kg / 384 lbs |
| Fuel Capacity: | 12 Litres / 3.2 gal | 12 Litres / 3.2 gal |