I am not sure you should ignore that the brand name on the bike is Piaggio and not Derbi….just because the forum calls it a Derbi does not mean the Zongshen is being sold under the Derbi brand name, Piaggio does own Derbi, however they are not selling what is coming out of the
Zongshen/Piaggio joint venture.
Engine Single cylinder, four stroke
Cooling method Air cooled
Displacement 149ml
Bore x Stroke 62 x 49.5mm
Compression ratio 8.8 9.6 1
Ignition CDI
Startup mode Electric start
Transmission Chain drive
Maximum torque 11.0N.m/6000r.min
Maximum power 8.7Kw/8000r.min
Maximum speed = 90km/h