On 9/4/2019 8:32 AM, sms wrote:

snip

Also look at the BBB Bbc-15 Fuel Tank XL. You'll have to order this from
Europe, not sold in the U.S..

Apparently this has been discontinued as most online stores list it as
out of stock. You could try
https://www.rmcbikes.com/en/fueltank-xl.html which lists it as in
stock, but don't know how accurate their online store is regarding stock.

“If you find something you really, really like, buy a lifetime supply;
because it'll either be changed for the worse or go out of production.”
– Grant Peterson, founder or Rivendell Bicycle Works.