BETA bikes 2017-2021
The new Beta RR and RS
If you have the green section under your fuel cap, then this EUR0002 filter is for you!
If you have no green section under your cap, the EUR0001 filter is for you.
Regarding the fitment in to aftermarket tanks, we recommend the EUR0001
So long as your tank has a 35.75mm+ ID hole then this will fit.