So 250 per strida, it’s quite expensive!
If it is possible to buy only the mirrored caliper, it could be less expensive to buy it separately and then levers, hose, and front caliper from shimano.
Yes. I wait for the reply of tektro to know if possible to get the mirrored caliper alone.
Another possibility : buy a kit, test, and if not possible to adapt, ask for refound and send it back to vendor.