This item is not well listed, I'm 99% sure it is the Adventure 30 litre tank.
http://www.ebay.co.uk/itm/BMW-1150R...=exe,ext=ext&srcrot=e11021.m43.l1120&rvr_id=0
Ian
http://www.ebay.co.uk/itm/BMW-1150R...=exe,ext=ext&srcrot=e11021.m43.l1120&rvr_id=0
Ian