Comparison of Keeway RX3 and Xmotos XB-21 [S]ave
| Attribute |  Keeway RX3 × |  Xmotos XB-21 × |
|---|---|---|
| General | ||
| Production from (year) | 2007 | 2008 |
| Make | Keeway | Xmotos |
| Model | Keeway RX3 | Xmotos XB-21 |
| Category | Sport | Minibike, cross |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Displacement (cm³) | 49.8 | 50 |
| Power (kw) | 9.3 | 2.5 |
| Cooling system | Liquid | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 1.5 | 39 |
| Stroke (mm) | 0 | 41.4 |
| Gearbox | - | Automatic |
| Fuel control | Overhead Cams (OHC) | - |
| Ignition | Electronics with micro prossesor | - |
| Clutch | Wet clutch | - |
| Compression | - | 9.4:1 |
| Exhaust system | Expansion with silencer | - |
| Chassis | ||
| Front suspension | - | Inverted hydraulic Adjustable shock |
| Rear suspension | Monoshock | Adjustable Air /Oil shock Absorber |
| Front brakes | Single disc | Expanding brake (drum brake) |
| Rear brakes | Single disc | Expanding brake (drum brake) |
| Frame type | Steel tubes with alluminium swing-armi brake pedal and rear body | - |
| Rear wheel travel (mm) | 48 | - |
| Rake (fork angle) (degree) | 7.3 | - |
| Other | ||
| Starter | Electric & kick | - |
| Color options |
|
|
| Dimensions | ||
| Wheelbase (mm) | 985 | 950 |
| Dry weight (kg) | 42 | 50 |
| Power/weight ratio | 0.2214 | 0.05 |
| Overall length (mm) | 1,360 | 1,320 |
| Seat height (mm) | 686 | 650 |
| Ground clearance (mm) | 270 | 150 |
| Performance | ||
| Fuel capacity (l) | 2 | 3 |
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