Seems like u can just say bye to that bolt.
Pics from not my bike [emoji28]
[emoji1313]Credit: MPK Concept, house of Ducati in Thailand
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Turns out Ducati sells a $70 kit to fit the rearsets to the V4R. It replaces the bolt with a countersunk set screw. Part No. 96280601AA
Unfortunately my dealer's parts department failed to advise me that this part was required when I ordered the rearsets.