Yamaha WR 125 (1997-00) vs Yamaha DT 125RE (1999) vs Yamaha IT 490 (1983) vs Yamaha WR 250Z (1998)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | WR 125 | DT 125RE | IT 490 | WR 250Z |
| Years: | 1997-00 | 1999 | 1983 | 1998 |
| Engine: | Two stroke, single cylinder | Two stroke, single cylinder, reed-valve | Two stroke, single cylinder, read valve | Two stroke, single cylinder |
| Capacity: | 124 cc / 7.6 cu-in | 123 cc / 7.5 cu-in | 487 cc / 29.7 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 54 x 4 mm | 56 X 50 mm | 87 x 82 mm | 68 x 68.8 mm |
| Compression Ratio: | 8.8;1 | 6.8:1 | 4.9;1 | 10.9:1 |
| Induction: | Car4buretor | Mikuni 28 SS | VM38SS Mikuni carburetor | Mikuni VM38SS carburetor |
| Ignition: | CDI | CDI | CDI | CDI |
| Max Power: | NA | 14.7 / 10.8 kW @ 7000 rpm | 35 hp @ 6000 rpm | 49.8 hp / 37.2 kW @ 8250 rpm |
| Max Torque: | NA | 1.7 kgf-m / 16.3 Nm @ 7000 rpm | 31 lb-ft @ 5500 rpm | 4.69 kgf-m / 44.5 Nm @ 7500 rpm |
| Transmission: | 6 Speed | 6 speed | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | Marzocchi "Upside-Down" telescopic hydraulic fork with advanced axle; compression and rebound stroke adjustment | 41mm Telescopic forks | 43mm Telescopic adjustable forks | 43mm inverted fork |
| Rear Suspension: | Sachs progressive "Soft Damp" type with single hydraulic shock absorber; spring preload adjustment, compression and rebound adjustment | Monocross linkage | Mono shock, adjustable spring preload and rebound damping | Monocross, swinging arm |
| Front Brakes: | Single disc | Single 230mm disc | Drum | Single 204mm disc |
| Rear Brakes: | Single disc | Single 220mm disc | Drum | Single 189mm disc |
| Front Tyre: | 80/90-21 | 80/90 -21 | 3.00 -21 | 80/100-21 |
| Rear Tyre: | 110/80-18 | 110/80 -18 | 150/80 -18 | 110/100-18 |
| Dry Weight: | 99 kg / 218 lbs | 116 kg / 255.7 lbs | 112.5 kg / 248 lbs | 103 kg / 227 lbs |
| Fuel Capacity: | 9.5 Litres / 2.5 US gal | 10 Litres / 2.2 gal | 13.6 Litres / 3.6 US gal | 13 Litres / 3.4 US gal |