That is a typical scammer ad. It is not a fake email address- it is a throwaway address, designed to make one think it is some kind of legit company email.

You contact them, and the non-existent bike will be in some remote location. They will ask for payment via some untraceable method, such as MoneyGram or MoneyPak, etc. -usually offering "free shipping" and even a x-number of days trial period, after which if you "don't like it, you can return it for a full refund, also with free shipping".

Sometimes they even offer to sell it via "The Ebay Protection Program" [They send you a fake email which looks like it's from Ebay....] -This is a very common scam- often involving cars or other big-ticket items. The price is always "Too good to be true"- (Because, of course, it is not true!)- and they play on people's greed, to over-ride their commonsense, and relieve you of your money.

Contact is always via email or texting, because they are usually ion a foreign country- most often Romania or Nigeria- and don't want you to hear their accent or poor English [Of course, they always use standard white-bread "American" names, like "John Carter" or "Barbara Johnson"...]

It's amazing that people still fall for these scams [But they must indeed be, 'cause such ads are still very common-place] as these are among the oldest scams on the internet.