If you're just starting your download queue, these are the heavy hitters:
Primus hasn't slowed down their experimentation in recent years. More recent additions to their digital discography include: primus discography download
You cannot find official downloads of these bootlegs legally. You need to trade them on forums like (a fan-run Primus streaming archive) or The Primate Fiasco subreddit. If you're just starting your download queue, these
: Offers high-res downloads (up to 24-bit/192 kHz) for those who want to hear every snap of Claypool’s bass strings. primus discography download