| General moped information |
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| Model: | Polini 910 GP4 Air Junior |
| Year: | 2007 |
| Category: | Minibike, sport |
| Rating: | Do you know this bike?
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| Safety: | See our safety campaign with the high safety rated bikes in this category.
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| Engine and transmission |
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| Displacement: | 39.69 ccm (2.42 cubic inches) |
| Engine type: | Single cylinder |
| Stroke: | 2 |
| Power: | 4.20 HP (3.1 kW)) |
| Compression: | 14.0:1 |
| Bore x stroke: | 36.0 x 39.0 mm (1.4 x 1.5 inches) |
| Fuel system: | Carburettor. SHA 14-14 |
| Ignition: | Electronic with inductive discharge |
| Starter: | Kick |
| Cooling system: | Air |
Transmission type
final drive: | Chain |
| Clutch: | Dry with centrifuge counter weights |
| Physical measures |
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| Dry weight: | 20.5 kg (45.2 pounds) |
| Seat height: | 395 mm (15.6 inches) If adjustable, lowest setting. |
| Overall length: | 940 mm (37.0 inches) |
| Overall width: | 240 mm (9.4 inches) |
| Chassis and dimensions |
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| Frame type: | Latticed tubular frame |
| Front tyre dimensions: | 90/65-R6.5 |
| Rear tyre dimensions: | 90/65-R6.5 |
| Front brakes: | Single disc |
| Front brakes diameter: | 148 mm (5.8 inches) |
| Rear brakes: | Single disc. 130 |
| Speed and acceleration |
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| Power/weight ratio: | 0.2049 HP/kg |
| Other specifications |
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| Color options: | Blue/White |
| Further information |
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| Parts and accessories | Check out parts and accessories from our partners.  |
| Ask questions | Join the 07 Polini 910 GP4 Air Junior discussion group. |
| Insurance, loans, tests
| Check out insurance here. Search the web for dealers, loan costs, tests, customizing, etc. |
| Related bikes | List related bikes for comparison of specs |
