Yamaha WR 125 (1990-96) vs Yamaha XS 650 / TX 650 (1973-74)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | WR 125 | XS 650 / TX 650 |
| Years: | 1990-96 | 1973-74 |
| Engine: | Two stroke, single cylinder | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. |
| Capacity: | 124 cc / 7.6 cu-in | 653 cc / 39.8 cu in |
| Bore x Stroke: | 54 x 4 mm | 75 x 74 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 8.8;1 | 8.4:1 |
| Induction: | Car4buretor | 2 x Mikuni carburetors |
| Ignition: | CDI | Battery, induction coil |
| Starting: | Kick | Kick |
| Max Power: | NA | 39.5 kW / 53 hp @ 7200 rpm |
| Max Torque: | NA | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Marzocchi "Upside-Down" telescopic hydraulic fork with advanced axle; compression and rebound stroke adjustment | Telescopic forks |
| Rear Suspension: | Sachs progressive "Soft Damp" type with single hydraulic shock absorber; spring preload adjustment, compression and rebound adjustment | Dual shock absorbers |
| Front Brakes: | Single disc | Single disc |
| Rear Brakes: | Single disc | Drum |
| Front Tyre: | 80/90-21 | 3.50-19 |
| Rear Tyre: | 110/80-18 | 4.00-18 |
| Dry Weight: | 99 kg / 218 lbs | 191 kg / 420 lbs |
| Fuel Capacity: | 9.5 Litres / 2.5 US gal | 12.5 Litres / 3.3 US gal |