Apologies if this has been posted before :icon_wink: , I came across this whilst surfing
http://justgastanks.com/product_info.php?products_id=3849
I don't think anyone has. I have one sitting in the workshop in Singapore waiting to be fitted. Mate of mine has one, covered over 550 kms on one fill and still had 5 litres left when he filled up :icon_mrgreen:
Another option. http://www.rally-raidproducts.co.uk/triumph-adventure/triumph-800-tiger-xc-rear-fuel-tank