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Hi Joachim! Do you know if there is a similar kit for the front calipers? Dunke.

if i remember right there is also something available.
But it's a mix from Aprilia and KTM parts. Rather expensive also because you have to throw away some of the sealings. Second choice
You may ask HE motorradtechnik in Germany for help
The have been selling the Grimeca calippers under their own brand (HE40 if i remember right) and did also offer sealing kits for them. But they do not know about Nordie brakes.
You may measure the diameters, or have a look in the manual for that,
Then ask for a HE40 kit and give them the diameters to be shure.
If you need help with the comunication, please ask
If you wont get something i can have a look at home. But i am not shure if i have left over a set. Maybe i have used it some years ago

ciao Joachim

Thank you so much Joachim. Let me check those options and I'll get back.