i have a 2007 suzuki eiger 400 4x4 manual shift. does anyone know
if it will hold a 27' tire with factory suspesion?

 

probably, but im not really sure how your gearing would be after the swap... whats the stock size tire?

 

There is always going to be some blowhard idiot who claims they can run 27s on a 400cc engine and pull wheelies and roost mud....the truth is a bit different.
The short answer is that you could try it, but you would lose a lot of your low end torque with a tire that tall...if you don't plan on leaving the pavement, 27's will be okay (some people do this) but as soon as you get in any substantial mud or a situation where you need your engine to be able to effectively turn the tire, you will be sorely disappointed.

I run 26" MudLites on my 500 Vinson with no problem, but I ride in really nasty places and need all the low end I can get

 

i was wondering this too. will the 26 mud lites scrape any?

 

I run 26" 589's with no prob. I ride in really sticky florida mud. Have a auto Eiger and in low it will spin them with no problem. They don't rub at all. Not sure if 27's would rub or not but I would get them if they didn't.