the highlighted bore and stroke make it a 69cc bike,,this bore and stroke can never make 78cc,,
however if cylinder is marked as 78cc its most probably 85cc , and its bore is same as of other 70s i.e 47mm but stroke is 49mm,,same as of 100cc or 125cc bikes,,
i see nothing special that prompts me to accept their words of it making 85km to a litre,,
because all its gear ratios, compression rato are same as of other 70's
also whats the need of led lights when they are consuming the same power as other halogen lamps?
looks are ggood no doubt,,
what r the two meters in it? rpm meter ? or fuel gauge?
LOL at the add,,,
by the way change is always good,, do update as about it,, and Allah Mubarak karay