Modifications
What each modification asks of the truck before it goes on, and what it costs you afterwards. Nothing here is sold; the tradeoffs are the point.
10 of 10 modifications
Matched on generation, market, year and engine only. Entries marked provisional also depend on something you have not told us, so some of them will not fit your truck. Narrowing your selection removes the mark.
A drawer system buys order and spends payload
Interior and trimCost$$$Difficulty 3/5
A rear drawer turns a boot full of loose boxes into something you can find things in at night, and it is genuinely the modification people regret least. It is also heavy before it holds anything: the unit cited below publishes its own weight, its external footprint, its usable internal space and its rated load, and the gap between the external and internal dimensions is the price of the slides and the frame. Set that unit weight against the difference between the curb weight and the gross weight in the second citation — that difference is the entire payload of the vehicle, and it is the same budget the passengers, the fuel, the roof load and the second battery are all drawing on.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$$–$$$$Difficulty 5/5
A selectable rear locker is the single largest traction change available to this truck, and unlike a lift or a tire it does nothing at all until you ask it to. The manufacturer cited below describes the mechanism precisely: activated, it stops the differential gears turning and therefore stops the two rear axle shafts turning independently of each other; unlocked, it behaves like an ordinary open differential. The rear application for this generation is listed for the whole 1999-2006 span across the common trims and is stated to suit all factory ratios, so a locker and a ratio change are independent decisions. The kit as sold is a differential and its switching hardware; the air to operate it is a separate purchase, which the manufacturer says in as many words.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$–$$$Difficulty 2/5
Two separate limits apply to anything you put on the roof, and the smaller one wins. The first is the vehicle's own dynamic roof load — the weight the roof may carry while the truck is moving, rack included — and the club article cited below gives that figure for this generation, alongside the much larger static figure that applies only when the vehicle is standing still and which the club is careful to attribute to a rack maker rather than to Mitsubishi. The second limit is whatever the rack you buy is rated for, which is a statement about the rack and never permission from the vehicle. Take the smaller number, subtract the rack's own weight from it, and what is left is the cargo you may actually carry up there.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
A second battery, and why the cheap way to charge it disappoints
Electrical systemCost$$–$$$Difficulty 3/5
The point of a second battery is that you can run a fridge, lights and a compressor overnight and still start the engine in the morning, because the two jobs are kept on separate batteries. The part people get wrong is the charging. The manufacturer cited below states plainly that a smart isolator only tops the secondary battery up, because it is watching the state of charge of the primary one, while a DC-DC charger runs a multi-stage profile aimed at taking the auxiliary battery to full. That is the difference between a second battery that is genuinely available on the third evening and one that quietly never gets above most of the way.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$$–$$$$Difficulty 4/5
A Gen 3 has front airbags, and the airbag decides when to fire by reading how the front of the vehicle is crushing. A manufacturer of these bars explains it plainly in the first citation: the triggering system is designed to work in harmony with the vehicle's frontal crush characteristics, and bolting on a rigid structure that does not behave the way the original front end behaved may change deployment timing — early or late, and it says both are dangerous. The same source describes what a compatible bar therefore has to do: measure the standard vehicle's crush behaviour and reproduce it in the bar and its mounting system, then say so on a sticker that names the standard it complies with. That is the difference between a bar engineered for this truck and a bar that merely bolts to it.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$–$$$Difficulty 2/5
The front set for a Gen 3 covers three separate things — the front undercarriage, the oil pan and the transmission — and it is sold either in steel or in marine-grade aluminium. The supplier publishes the thickness of each material, the weight of each individual plate in both, and the percentage by which the aluminium set is lighter; all of those figures are in the first citation. It also states, in its own words, that steel bends when it is hit and can be hammered back, while aluminium gouges more and is harder to reshape. Neither of those is a defect: they are two different answers to the same impact, and which one you want depends on whether you can get to a workshop or have to keep driving.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Going to 33s: what 285/75R16 costs you
Wheels and tiresCost$$–$$$Difficulty 2/5
The factory size on a third-generation Montero is listed in two of the citations below, and the usual 33-inch answer for a 16-inch wheel is 285/75R16. The tire calculator cited here gives the overall diameter of both sizes, the difference between them as a figure and as a percentage, and what the speedometer reads once the bigger tire is on — those are the numbers this decision actually turns on, and they are in the citation rather than repeated here. What the calculator cannot tell you is the second half of the bill: a common 33-inch all-terrain in this size is a light-truck tire with a stiff ten-ply casing and a per-tire weight the fourth citation states, and every one of those pounds is unsprung and rotating.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$–$$$Difficulty 4/5
A third-generation Montero rides on coil springs at all four corners, so a lift here is a spring decision before it is anything else. The specialist that supplies this generation sells its springs in two raised-height classes and in duty bands, and the two are independent: height is how far the body sits off the axles, duty is how much permanent weight the spring was chosen to carry. What makes that second axis usable is that the supplier states each band as a *range of added constant weight* and names the accessories it expects in each one — which is how you find your band without owning a scale. All of those figures, and the caveat that even a difference in factory trim moves which spring suits a given truck, are in the first citation. Spacers are the other half of the story and the half that gets oversold: the same supplier publishes what a thin strut-top spacer actually adds, and warns in the same breath about what a large one does to the suspension's arc.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$$–$$$$Difficulty 5/5
The route to a different final drive that anyone has actually documented on this generation is not a new gear set: it is fitting the differentials from a truck that left the factory geared shorter, which is the job the video cited below walks through end to end. Read the rest of this entry knowing that its evidence is thin and that its two sources disagree. The video, writing about the US market, says the 2001-2002 XLS is the model that carries the shorter gearing and that everything else from 2001-2006 does not; the forum list, covering the Pajero/Montero range globally, gives the same SOHC V6 engines one ratio with no such carve-out. Both figures are quoted in the citations. Neither source states what actually distinguishes one truck from another, and neither addresses whether differentials from the early cars interchange with the later ones — which is the premise the whole donor-swap idea rests on. Verify against your own two trucks before any money moves.
Anecdotal. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Anecdótico. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
Cost$$–$$$Difficulty 3/5
This is the entry where the Gen 3's body structure decides the answer. The Montero specialist that sells a full-length steel rail for this truck says in its own product copy that it does not consider the part a bona fide rock slider — partly because of the steel, but mainly because the Gen 3's monocoque sheet-metal body lets the factory mounting points deflect too much under a heavy impact. That is a statement about the truck, not about that particular rail, and it applies to anything that hangs off the same mounts. What a rail like this genuinely gives you is protection from parking-lot damage, brush and small strikes, plus a step; what it does not give you is a structure you can rest the vehicle's weight on.
Community consensus. This entry is not backed by factory documentation — treat its values and steps as a starting point, not as if they came from the factory manual.
Consenso de la comunidad. Esta entrada no se apoya en documentación de fábrica — tome los valores y los pasos como punto de partida, no como si vinieran del manual de fábrica.
No modifications match these filters.