Yamaha TZR 250RS (1993) vs Yamaha WR 250Z (1989-91)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | TZR 250RS | WR 250Z |
| Years: | 1993 | 1989-91 |
| Engine: | Two stroke, 90° V-Twin cylinder, read valve induction | Two stroke, single cylinder |
| Capacity: | 249.7 cc / 15.2 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 56 x 50.7 mm | 68 x 68.8 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 7.5:1 | 10.9:1 |
| Induction: | 2x Mikuni flatside carburetor | Mikuni VM38SS carburetor |
| Ignition: | Microcomputer controlled | CDI |
| Starting: | Kick | Kick |
| Max Power: | 45 hp / 33.6 kW @ 9500 rpm | 49.8 hp / 37.2 kW @ 8250 rpm |
| Max Torque: | 3.8 kgf-m / 40 Nm @ 8000 rpm | 4.69 kgf-m / 44.5 Nm @ 7500 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 39mm Upside-down forks | 43mm inverted fork |
| Rear Suspension: | Monocross linkage | Monocross, swinging arm |
| Front Brakes: | 2X disc 4 piston calipers | Single 204mm disc |
| Rear Brakes: | Single disc 2 piston caliper | Single 189mm disc |
| Front Tyre: | 110/70 Z17 | 80/100-21 |
| Rear Tyre: | 150/60 Z17 | 110/100-18 |
| Wheelbase: | 1340 mm / 52.8 in | 1480 mm / 58.2 in |
| Seat Height: | 780 mm / 30.7 in | 978 mm / 38.5 in |
| Dry Weight: | 126 kg / 277.8 lbs | 103 kg / 227 lbs |
| Fuel Capacity: | 15 Litres / 4.0 gal | 13 Litres / 3.4 US gal |