Both the 125 and 50cc variants use an EFI system which was sourced from SynerJect - originally a joint venture between the Orbital Engine Company (Balcatta, Western Australia) and Siemens - now fully owned by Continental.

This model had a 4-Stroke water-cooled, electronic fuel injected, single-cylinder engine, with 19 bhp (14 kW).

[citation needed] As well, there are two "restricted" versions still on sale in Europe: for 45 km/h (28 mph) which can be driven with a B type (personal car) driving licence and a 25 km/h (16 mph) ("moped") version, requiring no driving licence at all.

Until 2004, the 50 cc (3.1 cu in) model sold with electronic fuel injection (TSDI); afterwards, the carburettor version (C-TECH) was introduced.

It was said to be the first two-wheeler available from a manufacturer with a supercharger since the 1930s BMW Type 255,[1][2] and was said to have the power of a typical 250 cc (15 cu in) scooter.