Remark K on the TRX420

The remark, and what the legend says

If you are looking at a TRX420 and a set of Camso tracks, the letter K in the remark column is the thing to understand before you pay for anything. Camso flags the later applications for this designation with it and defines it, in the legend printed at the head of every page of its guide, in three words.

K* Temporary vehicule modificationCamso ATV/UTV Track System Application Guide, August 2026 revision, read 2026-09-26. The spelling of the second word is the guide’s own.

What the word temporary does and does not tell you

Camso says the modification is temporary. It does not say what is modified, what is removed, how long temporary is, or what state the machine is in when the system comes off again.

One thing the word does buy you, and it is worth having. In the same legend block Camso defines the opposite condition — the permanent one, at its own entry. So the manufacturer does distinguish work that gets undone from work that does not, and on this designation it has put the reversible label on. On a machine you intend to sell on, or to put back on wheels every spring, that is the distinction that matters, and it is the one a remark letter actually settles.

One qualifier Camso prints above the legend applies to every row in the guide, flagged and unflagged alike, and it is worth reading before you assume an unflagged row means a bolt-on job:

Minor modification and light interference are possible on any modelCamso ATV/UTV Track System Application Guide, August 2026 revision, read 2026-09-26

Two temporary remarks, and this machine carries one

There is a second condition in Camso’s legend whose first word is also temporary, and it is a different letter with a different gloss: one about body parts coming off, one about a modification to the vehicle. They are not two names for the same work — across the catalogue 5 machines carry both at once.

This designation carries only the vehicle-modification remark; the body-parts remark is not published against it. So do not assume the job is a panel coming off just because a panel is the easiest thing to picture — Camso has a separate letter for that and did not use it here. Every condition the catalogue records against this designation: Temporary Vehicle modification

The split that decides which row is yours

Camso publishes this designation as several rows rather than one, and they are separated by rear suspension as well as by era. The catalogue records the rear-suspension value against each row, which makes the split legible; the machine name and the displacement are identical across all of them.

Two things fall out of that table that neither manufacturer’s own list shows on its own. The first is that the flag sits on the later rows and not on the earlier ones, at identical displacement and — where the catalogue records them — identical sprocket pairs. Camso does not say why. Read it as a fact about the rows rather than about the machines: an unflagged earlier row is not a statement that the earlier machine needs no work, and the qualifier quoted above applies to it too.

The second is the split itself. The catalogue’s rear-suspension field labels the flagged rows Independent rear and Rigid rear axle — and labels the unflagged rows Independent rear and Rigid rear axle as well. Both layouts sit on both sides of the era split, so that field does not settle the question on its own any more than the model year does. It takes the two together.

And here is the part that costs somebody an order. Model year 2014 appears on both a flagged row and an unflagged one for this designation. A machine from that year sits on one row or the other according to its rear suspension, and the two rows say different things about whether a condition is published at all. A search on the model name and the year returns both and indicates neither.

Which layout you have is settled under the machine rather than in a catalogue, and it is a two-minute job: on an independent rear end each rear wheel moves on its own arm, on a rigid one both wheels sit on a single housing and move together. Push one rear wheel up and watch whether the other follows. Write down the answer with the model year — that pair is what a fitment desk needs, and either one alone is not enough.

What the other manufacturer publishes for the same machine

The same designation appears under the Commander WS4 as 24 separate rows, each led by a precise model code rather than by a displacement and a marketing name. 0 of them carry a published condition, and 0 carry a rear-suspension value.

Kimpex publishes no per-application condition data at all: every Commander WS4 record in this catalogue has an empty remarks field. The absence of a WS4 entry below means nobody has published a condition for it — not that none exists. Camso is the only manufacturer here that publishes these flags, so this page is necessarily a Camso view of the catalogue.

There is one clue in those code-led titles worth using. 2 of them print the letters IRSinside the title itself and the rest do not — which is something to match against, since the suspension field is empty on every one of those rows. Treat it as a hint to check rather than a decode: neither maker publishes a concordance between its row titles and the other’s suspension field.

The practical upshot of the two conventions is worth being blunt about. One maker gives you a broad row title, a rear-suspension field and a remark letter; the other gives you a precise model code, no suspension field and no remark. If you own this machine, one source can tell you a condition applies and the other can tell you exactly which machine it is talking about. You need both, and you get them by writing down your model code, your model year and your rear-suspension layout before you ask anyone anything.

What to ask before the order goes in

Camso names no part, assembly or location against this remark, and publishes no step, no time and no mention of it inside its own install and swap times. Honda publishes no position on track-system modification of this designation either — checked 2026-09-26. So the answers come across the counter, from whoever installs it. These are the five questions that change what the job costs you:

• Which published row is mine? By model year and rear-suspension layout — and does that row carry the remark? Get this settled first; the rest depends on it.
• What is the modification on this machine, and have you done it? A shop that has fitted this designation before can name the part in a sentence. One that has not is guessing alongside you.
• Does it get undone when the tracks come off in spring? And is that in the swap labour or billed on top? Temporary tells you it can be undone, not who pays to undo it.
• Is anything consumed — clips, fasteners, a bracket? That is the difference between a swap and a small parts order twice a year, so put those on the first order.
• If I buy the other maker’s system instead, what has to be modified? Kimpex publishes no conditions at all, so a clean-looking WS4 row is not a promise that nothing comes off. Only the shop can answer this one.

Where the same remark appears on other machines

The remark is not specific to this designation. Across the catalogue it reaches 18 machines in 3 makes — CFMOTO, Honda, Yamaha — so if your machine is in the grid below, this applies to you as well. Each row carries every condition published against that machine, not only this one, because the combination is what decides what an order has to cover:

■ the manufacturer publishes this condition against this application. · it publishes no such condition against it, which is not the same as publishing that the condition does not apply. Every condition the catalogue carries for any machine in this table has a column here. None is held back to keep the table narrow.

A row with two or three marks in it is a machine with two or three separate things to find out about before the order, not one.

Resolving which row is yours

On this designation the model name and the model year together do not resolve to one row — the rear suspension does. Confirm the layout under the machine before you order, then check your machine against the live catalogue rather than against the table above, which moves when the catalogue does. The general method — what to look at, what to record, what to send a fitment desk — is in the identification section.