Well, the Vybe and the Speed D8 are close cousins, in that both have the original Speed D7 'shopper' as their DNA source. So Vybe is a town/comfort bike in Dahon's lexicon.
Having fiddled around with gearing on the Speed D7 years ago, if you want more 'go' then you're in for the crankset and new 11T on the rear approach.
Last edited by snafu22; 11-17-16 at 07:38 AM.