About the argument spare think that, apart from the sacrosanct two spare wheels, need not represent a very small part of the load, and always in relation to the route to be taken. A crossing off the track of 2000 km you should get prepared for the unexpected, the gearbox broke crossbow broken, while a shorter route or on groomed trails (where jokes means half every three to four days!) Will lead to a significant streamlining the list of vital spare parts. Bring are filters and oils, belts and hoses, fuses and bulbs, adhesives and fasteners, wire and tubes, even if the use of tubeless. Knowing then the specific weaknesses of your vehicle will carry spare parts for the details that can be considered at risk.
A good knowledge of the mechanics of their vehicle is still essential, as well as the inventiveness: if you break the fuel pump and you are not mechanical and unable to mount the parts you behind, a tank on the roof connected by a tube to the carburetor will enter fuel in it simply to fall. The workshop must be complete with all the tools useful, to bribe and levers. A compressor pedal and an electric are indispensable (Editor's note: the compressors from mercatone that attach to the cigarette lighter and act as torch, lampaggiatore and sometimes even coffee are not to be considered: the heat and 750x16 tires do before pumping hand that with one of those crock), as well as work gloves, rags, and blocks of wood of 3 cm in thickness. If you have, bring also a binda, very useful for operations disincaglio. Do not forget duct tape and silicone tubes, to repair cracks on sleeves or external seals.