i bought this one for £5 then cut it down to disired lenght .fitts perfect ...best upgrade was 710 mm handlebars £20 totaly different feel.........28.6 is the seatpost i got .larger size wouldnt of fit
eBay:
http://pages.ebay.com/link/?nav=item.view&id=280901585867
Sorry mate, didn't really follow all that.
For Clarity...
Am about to buy an Aurora but intend to replace the stock seat post with a Thudbuster ST. I am bidding on a 27.2 millimetre ST at the moment but it has belatedly occurred to me that I don't know the internal diameter of the Aurora's seat tube. Since it is Saturday I won't be able to get a response from AlienOcean
before the auction ends. Was just hoping that an Aurora owner on here would have the info so I can decide whether to keep bidding or not.