Derbi Dirt Boy 50 (2009)

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Model:	Derbi Dirt Boy 50
Year:	2009
Category:	Minibike, cross
Engine and transmission
Displacement:	49.90 ccm (3.04 cubic inches)
Engine type:	Single cylinder
Stroke:	4
Compression:	12.0:1
Bore x stroke:	39.0 x 41.8 mm (1.5 x 1.6 inches)
Fuel system:	Carburettor. 14 mm
Ignition:	CDI
Starter:	Kick
Lubrication system:	Oil pump
Cooling system:	Air
Gearbox:	1-speed
Physical measures and capacities
Dry weight:	47.0 kg (103.6 pounds)
Seat height:	610 mm (24.0 inches) If adjustable, lowest setting.
Overall length:	1,290 mm (50.8 inches)
Overall width:	519 mm (20.4 inches)
Wheelbase:	905 mm (35.6 inches)
Derbi Dirt Boy 50 dimensions and frame
Front suspension:	Hydraulic fork.
Front suspension travel:	120 mm (4.7 inches)
Rear suspension:	Monoshock.
Rear suspension travel:	140 mm (5.5 inches)
Front tyre dimensions:	2.50-12
Rear tyre dimensions:	2.75-10
Front brakes:	Single disc
Front brakes diameter:	160 mm (6.3 inches)
Rear brakes:	Expanding brake (drum brake)
Rear brakes diameter:	90 mm (3.5 inches)
Speed and acceleration
Fuel capacity:	2.30 litres (0.61 gallons)
Oil capacity:	0.60 litres (0.04 quarts)
Color options:	Black/white

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