Wunderlich - Tank Adapter Filler Cap Monza & Aston for BMW R nineT (2014 - 2016)Treat yourself and your R nineT to something special! Both our "Aston" & "Monza" are very elegant parts made from the finest aluminium that leave every gas station attention staring in awe! Thanks to the filler cap, your R nineT becomes that bit more classic, more unique! You'll need this adapter in order to adapt both filler caps to your R nineT elegantly and with minimum effort. The level of quality and design is as high as that of the filler cap.