| Attribute | Rieju MRX × | Rieju RR Castrol × |
|---|---|---|
| General | ||
| Production from (year) | 2005 | 2005 |
| Make | Rieju | Rieju |
| Model | Rieju MRX | Rieju RR Castrol |
| Category | Cross / motocross | Super motard |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. Dell´ortho PHBN 14-12 | Carburettor. Dell´Ortho SHAH |
| Displacement (cm³) | 50 | 50 |
| Power (kw) | 6.9 | 6.9 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | - | Chain |
| Bore (mm) | 39 | 39 |
| Stroke (mm) | 40.3 | 40.3 |
| Gearbox | 6-speed | 6-speed |
| Clutch | - | Multiple disks in oil bath |
| Lubrication system | Automix | - |
| Compression | 12.0:1 | 12.0:1 |
| Exhaust system | Aluminum silencer | Type cartridge with fiber glass in its interior. Aluminum case is enclosed of METRAKIT for exclusive use in competition |
| Chassis | ||
| Front suspension | Showa advantage with inverted bracket | Showa advantage with inverted bracket |
| Rear suspension | Showa | Showa adjustable |
| Front brakes | Single disc | Single disc. Double piston |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 200 | 180 |
| Frame type | Perimetral of double beam in steel. | Steel tube of double cradle, soldier electrically. Reinforced in the frontal part. |
| Front tyre | 80/90-21 | 80/90-21 |
| Rear tyre | 110/80-18 | 110/80-18 |
| Dimensions | ||
| Wheelbase (mm) | 1,332 | 1,332 |
| Overall height (mm) | 1,170 | 1,170 |
| Overall length (mm) | 2,050 | 2,050 |
| Overall width (mm) | 800 | 800 |
| Performance | ||
| Fuel capacity (l) | 8.4 | 6 |