Comparison of Rieju RR 125 Fun Bike and Tomos BT 1990 [S]ave
| Attribute |  Rieju RR 125 Fun Bike × |  Tomos BT 1990 × |
|---|---|---|
| General | ||
| Production from (year) | 1998 | 1990 |
| Make | Rieju | Tomos |
| Model | Rieju RR 125 Fun Bike | Tomos BT |
| Category | Cross / motocross | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. Dell´Ortho PHBL 26 | Carburettor |
| Displacement (cm³) | 125 | 50 |
| Power (kw) | 6.9 | 4.4 |
| Cooling system | Liquid | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 56 | 38 |
| Stroke (mm) | 50.6 | 0 |
| Gearbox | 6-speed | 5-speed |
| Fuel control | Membrane | - |
| Ignition | electric | - |
| Clutch | Wet Plate | - |
| Compression | 9.0:1 | - |
| Chassis | ||
| Front suspension | Inverted forks 32mm Showa® | - |
| Rear suspension | Monoshock Gas | - |
| Front brakes | Single disc. AJP | - |
| Rear brakes | Single disc. AJP 2 piston | Expanding brake (drum brake) |
| Diameter (mm) | 185 | 220 |
| Frame type | Tubeular | - |
| Front tyre | 80/69-j56 | - |
| Rear tyre | 110/62-61j | - |
| Other | ||
| Starter | Kick | Kick |
| Color options |
| - |
| Dimensions | ||
| Dry weight (kg) | 95 | 70 |
| Power/weight ratio | 0.0726 | 0.0629 |
| Performance | ||
| Top speed (km/h) | 80 | 90 |
| Fuel capacity (l) | 5.5 | 9 |
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