Comparison of Derbi GP1 250 2006 and Enfield Thunderbird 500 2012

Attribute	Enfield Thunderbird 500 2012 ×	Derbi GP1 250 2006 ×
General
Production from (year)	2012	2006
Make	Enfield	Derbi
Model	Enfield Thunderbird 500	Derbi GP1 250
Category	Classic	Scooter
Engine and transmission
Engine type	Single cylinder, four-stroke	Single cylinder, four-stroke
Valves per cylinder	-	4
Fuel system	Injection. Keihin Electronic Fuel Injection	Carburettor. Keihin CVK 303 A
Engine details	Twin spark	-
Displacement (cm³)	499	248.2
Power (kw)	19.9	-
Cooling system	Air	Liquid
Transmission type,final drive	Chain	-
Torque (Nm)	41.3	-
Bore (mm)	84	72
Stroke (mm)	90	60
Gearbox	5-speed	-
Fuel control	Overhead Valves (OHV)	-
Ignition	Digital Electronic Ignition	-
Clutch	Wet mulitiplate	Automatic
Lubrication system	Wet sump	Oil pump
Compression	8.5:1	10.5:1
Chassis
Front suspension	Telescopic fork	Upside down hydraulic fork
Rear suspension	Twin gas charged shock absorbers with 5-step adjustable preload	Single shock
Front brakes	Single disc	Single disc
Rear brakes	Single disc	Single disc
Diameter (mm)	240	240
Frame type	Single downtube, using engine as stressed member	-
Front tyre	90/90-19	120/70-14
Rear tyre	120/80-18	140/60-14
Front wheel travel (mm)	130	100
Rear wheel travel (mm)	80	-
Other
Starter	Electric & kick	Electric
Color options	black red silver	black blue silver
Light	Projection type headlamp, H7 55 / 55 W	-
Dimensions
Wheelbase (mm)	1,350	1,374
Dry weight (kg)	195	110
Power/weight ratio	0.1021	-
Overall height (mm)	1,300	1,228
Overall length (mm)	2,060	1,940
Overall width (mm)	895	800
Performance
Fuel capacity (l)	20	-
Battery capacity (Ah)	14	-