I tapped 'Triumph Bonneville T140 parts' into google which threw up loads of sites - enough to keep you entertained for hours. Okay, most of them were UK based, but I'm sure you would be able to find some US based ones by doing the same thing. I would guess that shipping charges from here to the US could be more than the value of the bits you bought, unless you went on something of a spending spree to make it all worthwhile! Good luck with your search - and don't let your 'wish list' get the better of your wallet while you are doing it!
This is the one you want http://www.ebay.co.uk/itm/Smiths-Ga...984273?hash=item2cb88fab51:g:bg0AAOSwg3FUkYVs US e bay lists them as well
