Yamaha SRX 400 (1985-86) vs Yamaha WR 250Z (1996)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | SRX 400 | WR 250Z |
| Years: | 1985-86 | 1996 |
| Engine: | Four stroke, single cylinder, SOHC, 4 valves | Two stroke, single cylinder |
| Capacity: | 399 cc / 24.3 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 87 х 67.2 mm | 68 x 68.8 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 9.2:1 | 10.9:1 |
| Induction: | YDIS Twin Carburetor | Mikuni VM38SS carburetor |
| Ignition: | TCI | CDI |
| Starting: | Kick | Kick |
| Max Power: | 33 hp / 24.6 kW @ 7000 rpm | 49.8 hp / 37.2 kW @ 8250 rpm |
| Max Torque: | 3.4 kgf-m / 24.5 lb-ft @ 6000 rpm | 4.69 kgf-m / 44.5 Nm @ 7500 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain, 428 Heavy Duty O-Ring, 138 links | Chain |
| Front Suspension: | Telescopic forks | 43mm inverted fork |
| Rear Suspension: | Dual shocks | Monocross, swinging arm |
| Front Brakes: | Single 320mm disc 4 piston caliper | Single 204mm disc |
| Rear Brakes: | Single disc | Single 189mm disc |
| Front Tyre: | 110/70-17 Tubeless | 80/100-21 |
| Rear Tyre: | 140/70-17 Tubeless | 110/100-18 |
| Dry Weight: | 147 kg / 324 lbs | 103 kg / 227 lbs |
| Fuel Capacity: | 15 Liters / 3.9 US gal | 13 Litres / 3.4 US gal |