When we go up to Torridon which is a 9 hr drive for us, i’m sure its overkill but between the group of us we take just about everything to build another bike, seat clamp, spare seat post (incase/when the crank bros dropper post fails)and saddle, wheels, spokes, cassette, assortd bearings, tyres, mechs, shifters, cables, spare brakes, assorted bolts skewers stem, etc etc. oly things we’ve missed tends to be fork, rear shock and a frame. Thankfully we’ve never needed too much apart from the usual pads tyres and tubes. Just make sure you’ve checked your bikes and there is nothing underlying on the way out, wheel bearings bottom brackets etc.