Yamaha TZR 125R Belgarda (1991-92) vs Yamaha WR 250Z (1989-91)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | TZR 125R Belgarda | WR 250Z |
| Years: | 1991-92 | 1989-91 |
| Engine: | Two stroke, single cylinder, read valve, | Two stroke, single cylinder |
| Capacity: | 124 cc / 7.6 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 56.4 x 50 mm | 68 x 68.8 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 5.9:1 | 10.9:1 |
| Induction: | Mikuni VM26SS carburetor | Mikuni VM38SS carburetor |
| Ignition: | CDI | CDI |
| Starting: | Kick | Kick |
| Max Power: | 30 hp @ 11000 rpm | 49.8 hp / 37.2 kW @ 8250 rpm |
| Max Torque: | 1.8 kgf-m / 13 lb-ft @ 10000 rpm | 4.69 kgf-m / 44.5 Nm @ 7500 rpm |
| Clutch: | Wet Plate | Multi-plate wet clutch |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 39mm Upside-down forks | 43mm inverted fork |
| Rear Suspension: | Monoshock adjustable preload | Monocross, swinging arm |
| Front Brakes: | Single disc 4 piston caliper | Single 204mm disc |
| Rear Brakes: | Single disc 2 piston caliper | Single 189mm disc |
| Front Tyre: | 110/70-17 | 80/100-21 |
| Rear Tyre: | 140/70-17 | 110/100-18 |
| Dry Weight: | 121 kg / 266.7 lbs | 103 kg / 227 lbs |
| Fuel Capacity: | 15 Litres 3.1 US gal | 13 Litres / 3.4 US gal |