Formula freehub type?

[SAN]

Could someone identify what freehub is used on this Formula hub? The freehub is 11-speed and is unmarked.
After the last very hot summer with very dusty gravel roads I don't like the sound of the freehub. I've twice tried to get some answer for Formula support but they don't respond to my reguest. My dealer don't have a clue and Haibike says that I have to contact the dealer. The dealer contacted Haibike but doesn't get any answer.
So what 11-speed freehub would fit this hub, DC-22LW?

 

[argoose]

Any good LBS should be able to order a replacement.
You might be lucky and they can change the bearings in freehub.
Ordered new free hub from LBS, put on bike , stripped old hub and replaced bearings so now have new hub on bike and TSB ready to throw on.