mito is very simelar but the gearbox is the other way round, therefore the chain is on the left. the 122/123 is mostly used in the aprilia 125s, i beleive the MX 125 uses it too.
think he meant tuono 125. rotax 122 one to go for, 123 and earlier af1 engines iron bores. take ages to warm up n more prone to cold seizing. pretty sure the 122 top ends dont fit on 123 bottom ends either. 123 comes with 34mm flat slide carb tho, will fit on the 122's and makes a vast difference over the 28mm one on it.
the extreema r with the 123 had the 34 (some didnt infact) but the other 123's had the same old dell 28. 123 is deffo the better pile of shit tho
think spares much more plentiful for the 122, been using them in rotax max series for years. doubt you'd notice any difference between 122 and 123, as long as you had the same carb and pipe on them. vhsb 34 is around £130 with manifold, best off finding a breaker with an af1 in there.
