| MODEL | RIEJU 125 MRX 4T 2005 |
| Year | 2005 |
| Engine Type | Single cylinder, four-stroke |
| Displacement / Capacity | 125 cc / 7.63 cu in |
| Bore X Stroke | 54 x 54 mm / 2.1 x 2.1 in |
| Compression Ratio | 10.0:1 |
| Cooling System | — |
| Max Power | 10.6 kW / 14.5 hp |
| Max Torque | — |
| Ignition | — |
| Induction | Mikuni VM 20 SS carburettor |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | Mixture of gasoline and oil to 2% |
| Gear Box | 5-speed |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | Perimetral steel |
| Front Suspension | Paioli |
| Rear Suspension | Paioli |
| Front Brakes | Single disc, 260 mm / 10.2 in |
| Rear Brakes | Single disc, 200 mm / 7.9 in |
| DIMENSION SPECS | |
| Overall Length | 2050 mm / 80.7 in |
| Overall Width | 800 mm / 31.5 in |
| Overall Height | 1170 mm / 46.1 in |
| Seat Height | — |
| Wheelbase | 1332 mm / 52.4 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 120/80-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 8.4 Litres / 2.22 US gal |
| Fuel Consumption | — |
| Top Speed | — |
A 125 cc four-stroke enduro from Rieju powered by a Yamaha-derived engine. It combines a steel perimeter frame with Paioli suspension and a big 21-inch front wheel for trail and off-road riding.
