Comparison of Factory Bike Desert YR 50 2004 and Rieju MRX [S]ave
| Attribute |  Factory Bike Desert YR 50 2004 × |  Rieju MRX × |
|---|---|---|
| General | ||
| Production from (year) | 2004 | 2005 |
| Make | Factory Bike | Rieju |
| Model | Factory Bike Desert YR 50 | Rieju MRX |
| Category | Enduro / offroad | Cross / motocross |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor. Dell´ortho PHBN 14-12 |
| Displacement (cm³) | 49.7 | 50 |
| Power (kw) | - | 6.9 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | - |
| Bore (mm) | 40.3 | 39 |
| Stroke (mm) | 39 | 40.3 |
| Gearbox | 6-speed | 6-speed |
| Lubrication system | - | Automix |
| Compression | 12.0:1 | 12.0:1 |
| Exhaust system | - | Aluminum silencer |
| Chassis | ||
| Front suspension | PAIOLI Fork 36 mm | Showa advantage with inverted bracket |
| Rear suspension | Shock-Absorber PAIOLI | Showa |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 220 | 200 |
| Frame type | Hardened steel CrMo. | Perimetral of double beam in steel. |
| Front tyre | 90/90-21 | 80/90-21 |
| Rear tyre | 110/80-18 | 110/80-18 |
| Other | ||
| Color options |
| - |
| Dimensions | ||
| Wheelbase (mm) | 1,495 | 1,332 |
| Kerb weight (kg) | 81.5 | - |
| Overall height (mm) | 1,220 | 1,170 |
| Overall length (mm) | 2,070 | 2,050 |
| Overall width (mm) | 810 | 800 |
| Performance | ||
| Fuel capacity (l) | 7.5 | 8.4 |
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