KYB shocks?

Scat Adams said
It's a weekend cruiser, everything else is bone stock besides the Koni's which I had set on the firmest setting.

Could be why they blew out. If your suspension is soft or the springs are sacked out, the firmest setting could have been compensating for that and prematurely work them out.

For a rebuild the link was just one place. I would shop them out and see.

KONI NA | Locator