The DRV-A601W Kenwood dashcam mount is no longer available. (Part #L4U-QEBY-CK) This adapter increases the size of the included ball mount so that it will work with this cheap, generic suction mount available on Amazon.
https://www.amazon.com/dp/B098NTPP4P?ref=ppx_yo2ov_dt_b_fed_asin_title
Simply print out the two sphere halves, place them around the existing ball to increase the diameter and then insert it into the mount. No glue is necessary as the pressure from the screw/clamp on the mount is sufficient to hold it in place.
The author marked this model as their own original creation.