Where can I buy a new one? Mine is ok - but replacing the choke cable tonight - I noticed that it is started to get perished - so figured replace before it breaks...

Rick Oliver sells lengths of thick walled hose that should last longer.

And now the noob question (especially seeing as I've been on here a long time)...how/where do you buy from Rick Oliver?

Go to the 'V4 - General' section. Rick's price list is pinned to the top. All necessary details contained within.

viewtopic.php?f=22&t=26174
Take a look here.

Ricks vacuum hose is silicon based I believe, it appears a lot more durable than the OEM rubber hose.

If you cannot wait and need it now, then most bike or car spares shops have reels of hose, just need to get the ID size correct and you don't want to too thick.

rick is your best bet,but like said above take your old hose and any motor factors will have the same diameter hoses in lenths to suit