Yamaha WR 125 (1990-96) vs Yamaha XS 650 / TX 650 (1973-74) vs Yamaha TDM 900A (2006-07)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha |
| Model: | WR 125 | XS 650 / TX 650 | TDM 900A |
| Years: | 1990-96 | 1973-74 | 2006-07 |
| Engine: | Two stroke, single cylinder | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. | Four stroke, parallel twin cylinder, DOHC, 5 valves per cylinder |
| Capacity: | 124 cc / 7.6 cu-in | 653 cc / 39.8 cu in | 897 cc / 54.7 cu-in |
| Bore x Stroke: | 54 x 4 mm | 75 x 74 mm | 92 x 67.5 mm |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 8.8;1 | 8.4:1 | 10.4:1 |
| Induction: | Car4buretor | 2 x Mikuni carburetors | Electronic Fuel Injection |
| Ignition: | CDI | Battery, induction coil | TCI |
| Starting: | Kick | Kick | Electric |
| Max Power: | NA | 39.5 kW / 53 hp @ 7200 rpm | 86.2 hp / 63.4kW @ 7500 rpm |
| Max Torque: | NA | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm | 88.8 Nm / 9.1 kgf-m @ 6000 rpm |
| Transmission: | 6 Speed | 5 Speed | 6 speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Marzocchi "Upside-Down" telescopic hydraulic fork with advanced axle; compression and rebound stroke adjustment | Telescopic forks | Telescopic fork |
| Rear Suspension: | Sachs progressive "Soft Damp" type with single hydraulic shock absorber; spring preload adjustment, compression and rebound adjustment | Dual shock absorbers | Swingarm Link-type |
| Front Brakes: | Single disc | Single disc | 2 x 298mm discs with ABS |
| Rear Brakes: | Single disc | Drum | Single 248mm disc with ABS |
| Front Tyre: | 80/90-21 | 3.50-19 | 120/70 ZR18 |
| Rear Tyre: | 110/80-18 | 4.00-18 | 160/60 ZR17 |
| Fuel Capacity: | 9.5 Litres / 2.5 US gal | 12.5 Litres / 3.3 US gal | 20 Litres / 5.2 US gal |