Euro3 compliant. Street legal (norm for EU enduro models). Motor source not positive either Minarelli ,Morini (Franco) or Rotax (it looks like Rotax style PV config) as usual for the Italian mini and cottage shop/importer built machines. As for chassis HM usually uses Verlicchi to build them for their non-Honda built units, like this and their minis. http://www.hmmoto.it/ita/scheda.asp?idFam=13&idProd=191 I would say that "uncorked" this machine is a ripper.
What actual bikes are those? Honda has not made 2 strokes since 02 right? Edit, after looking at them closer they are not Hondas at all huh?
HM (Honda Montesa) is the Honda Italia importer. They contract with various Italian manufacturers and engineering firms to create their "own Hondas" of course all the Honda Hondas are the Japanese imports. The 50cc minis and the 125 2T and 4Ts are all in house models. Even Mika's E3 CRF480 is an HM creation built on the CRF450 base. Chassis for the in house models(50s,125s) basically scaled down Honda clones built by Verlicchi S.P.A, motors are sourced like KTMs, Huskys and many others minis (morini/beta/minarelli/rotax dont know which one).
i bet it is that 125 2 stroke. http://www.brp-powertrain.com/en/desktopdefault.aspx/tabid-225/362_read-331/ Looks the same... Looks like aprilia uses it too...