| General moped information | 
  
    | Model name | Polini 911 GP 3 Junior | 
    | Year | 2005 | 
    | Category | Minibike, sport | 
    | Rating | 3.3   See the detailed rating of the fun-factor, engine performance, racing track capabilities, etc. Compare with any other bike. | 
    
        | Engine and transmission | 
  
    | Displacement | 39.7 ccm (2.42 cubic inches) | 
    | Engine type | Single cylinder, two-stroke | 
    | Power | 4.2 HP (3.1  kW)) | 
    | Compression | 16.5:1 | 
    | Bore x stroke | 36.0 x 39.0 mm (1.4 x 1.5 inches) | 
    | Fuel system | Carburettor | 
    | Ignition | Electronic | 
    | Cooling system | Air | 
    | Clutch | Dry with centrifugal counter weights | 
    
        | Chassis, suspension, brakes and wheels | 
  
    | Frame type | Lattice tubular frame | 
    | Front brakes | Single disc | 
    | Rear brakes | Single disc | 
    
        | Physical measures and capacities | 
  
    | Dry weight | 20.5 kg (45.2 pounds) | 
    | Power/weight ratio | 0.2049 HP/kg | 
    | Seat height | 395 mm (15.6 inches) If adjustable, lowest setting. | 
    | Overall length | 940 mm (37.0 inches) | 
    
        | Other specifications | 
  | Update specs | Report missing specs or required updates. | 
    
        | Further information | 
  | Insurance costs | Compare US insurance quotes from the nation's top providers. | 
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. | 
| Ask questions | Join the 05 Polini 911 GP 3 Junior discussion group or the general Polini discussion group. | 
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