What category is the 2007 Polini 910 GP4 Air Junior?

The 2007 Polini 910 GP4 Air Junior has a Category of Minibike, sport.

What is the engine size of the 2007 Polini 910 GP4 Air Junior?

The 2007 Polini 910 GP4 Air Junior has a Capacity: of 39.69 ccm (2.42 cubic inches).

What type of engine does the 2007 Polini 910 GP4 Air Junior have?

The 2007 Polini 910 GP4 Air Junior has a Engine type of Single cylinder.

What is the engine power of the 2007 Polini 910 GP4 Air Junior?

The 2007 Polini 910 GP4 Air Junior has a Power of 4.20.

Is the 2007 Polini 910 GP4 Air Junior air cooled or liquid cooled?

The 2007 Polini 910 GP4 Air Junior has a Cooling system of Air.

How much does the 2007 Polini 910 GP4 Air Junior weigh?

The 2007 Polini 910 GP4 Air Junior has a Dry weight of 20.5 kg (45.2 pounds).

What is the seat height of the 2007 Polini 910 GP4 Air Junior?

The 2007 Polini 910 GP4 Air Junior has a Seat height of 395 mm (15.6 inches) If adjustable, lowest setting..

Polini 910 GP4 Air Junior - 2007 Specifications and Reviews

Name: 2007 Polini 910 GP4 Air Junior
Brand: Polini

The 2007 Polini 910 GP4 Air Junior is a lightweight sport minibike designed for young racers and beginners learning competitive riding skills. Its compact 39.69cc air-cooled engine delivers responsive performance, while the chain drive and dry clutch provide engaging mechanical feedback ideal for developing rider technique on track or circuit.

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2007

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Engine and Transmission Specifications
Clutch	Dry with centrifuge counter weights
Transmission typefinal drive	Chain
Cooling system	Air
Starter	Kick
Ignition	Electronic with inductive discharge
Fuel system	Carburettor. SHA 14-14
Bore x stroke	36.0 x 39.0 mm (1.4 x 1.5 inches)
Compression	14.0:1
Power	4.20
Stroke	2
Engine type	Single cylinder
Capacity:	39.69 ccm (2.42 cubic inches)
Physical measures and capacities
Overall width	240 mm (9.4 inches)
Overall length	940 mm (37.0 inches)
Seat height	395 mm (15.6 inches) If adjustable, lowest setting.
Dry weight	20.5 kg (45.2 pounds)

Polini 910 GP4 Air Junior dimensions and frame
Rear brakes	Single disc. 130
Front brakes diameter	148 mm (5.8 inches)
Front brakes	Single disc
Rear tyre dimensions	90/65-R6.5
Front tyre dimensions	90/65-R6.5
Frame type	Latticed tubular frame
Speed and acceleration
Power/weight ratio	0.2049 HP/kg


Category	Minibike, sport
Year	2007
Model	Polini 910 GP4 Air Junior
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Color options	Blue/White

Performance Profile & Rider Fit

4.2 hp

Peak Power

Best For

Track90%

City5%

Cornering88%

Daily Riding3%

Touring2%

Passenger0%

Rider Profile

Best For	This is a purpose-built minibike for young or novice riders learning race-craft on a pit-bike style machine, not a vehicle for experienced street riders seeking performance.
Purpose	Designed for minibike racing and skill development on karting tracks or closed circuits rather than transportation.
Rider Fit	Its tiny 395mm seat height and 20.5kg dry weight mean it suits small, lightweight riders, typically kids or junior racers.
Character	A featherweight, high-revving little racer that rewards precise throttle control and body positioning over outright speed.
Not Ideal For	Not suitable for adult commuting, highway use, touring, or carrying a passenger.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.