| MODEL | YAMAHA RZ 250R 1984 - 1985 |
| Year | 1984 - 1985 |
| Engine Type | Two-stroke, torque induction, parallel twin |
| Displacement / Capacity | 247 cc / 15.0 cu in |
| Bore X Stroke | 54 x 54 mm |
| Compression Ratio | 6.2:1 |
| Cooling System | Liquid cooled |
| Max Power | 26.1 kW / 35.5 hp @ 8500 rpm |
| Max Torque | 30.2 Nm / 3.1 kgf-m @ 8000 rpm |
| Ignition | CDI |
| Induction | 2 x Mikuni VM28SC carburetors |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Autolube |
| Gear Box | 6 speed |
| Clutch | Wet multiplate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Monocross |
| Front Brakes | Single 267 mm disc |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 785 mm / 30.9 in |
| Wheelbase | — |
| Ground Clearance | 165 mm / 6.4 in |
| Dry Weight | 139 kg / 306.4 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00-18 |
| Rear Tyre | 3.50-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 16.5 Litres / 4.3 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 1984-85 RZ 250R is the later run of Yamaha's liquid-cooled 250 twin two-stroke, listed with the same engine output and brakes as the earlier LC versions. The source page offers little detail on how it was updated.
