Just after Travis Welker (Jamie Kenedy) shows up, he can be seen opening a beer with a horn shaped bottle opener attached to the fridge door, this bottle opener was a plot point in Tremors 5: Bloodlines
Upon seeing the graboid fossil, Travis they are going to need a big-ass cage. This references to Brody in Jaws. When Brody first sees the shark, he says they are going to need a bigger boat.