Someone with mechanical skills could ensure that this pump would work perfectly in a 690RFR?.
KTM to replace the OEM sells 950 and 990 Supermoto SuperEnduro. These pumps are of 10.5 mm diameter piston.
The RFR 690 has a pump piston with a diameter from 11 mm. In theory it should be valid for use in RFR 690.
If possible, I was interested to buy this:
... but it's a lot of money to spend if not safely.
Thanks for the replies.