66 80cc huh?

[570rm47]

While looking round for a new engine kit i came across this
http://www.ebay.com/itm/BRAND-NEW-6...687?pt=LH_DefaultDomain_0&hash=item564807bb37

is it 66 or 80cc im confused would love some insight

also it what does it mean new generation of 2 stroke cycles asked and got no reply

 

[Fabian]

No such thing as a """true""" 80cc engine. 69cc is as large as they come but mostly they are 66cc.