Assuming that you have a Raptor.
For this track, since its a loop, with cell coverage, and auto parts stores nearby. I don't think you will really need much.
This is what I have for when I goto BAJA, which is a you break your screwed venue.
1. Fire Extinguisher
2. First Aid Kit
3. Tow Strap
4. Extra Spare Tire
4.1 Tire Plug Kit
5. Spare fluids
6. Shovel
7. Lowrance GPS
8. VHF Radio
9. Misc. Spare nuts and bolts
10. Fan Belt
11. Salt Shaker
12. A way to secure everything. (This one is important)
I highly recommend the first 4. A Helmet can never hurt, but I don't think that it will be required. The course will be marked so a GPS wont be required, but it helps to know whats coming up. VHF Radios make it fun to talk to everyone, and helps with calling out stops, etc...
Really all you need is your Raptor, and some wits.
---------- Post added at 01:07 PM ---------- Previous post was at 01:06 PM ----------
Most HNRs require harnesses to work properly (I Know mine does), and I personally feel that neck rolls can cause more harm than good.
Thanks for the great list!! Some of that stuff I was already planning on getting so that's good.