Always tricky to define a spare parts wishlist because it's impossible to cater for every eventuality but I would recommend you get some spare front wheel lug nuts (TLR1069) and maybe a spare pack of slipper clutch nuts (TLR6312) because they are odd sizes.
Other than that, some Green rate front springs as a minimum (TLR5175) and possibly some blues (TLR5176) along with possibly some pink rears (TLR5168)
We broke a front steering spindle (TLR 1061) during testing (was a proper impact mind you - very impressive) and a rear hub (TLR2052)
You'll can almost always guarantee that no matter how prepared you try to make yourself, you'll end up needing something that you've not thought about - but the car has been pretty robust during testing. When it has broken, it did deserve it
