Troco o calço de travão, nem que seja caro.

Troco is the 1st person singular form of the verb trocar:

• trocar = to change / to replace
• troco = I change / I’m changing / I’ll change, depending on context

In this sentence, it most naturally means something like:

• I’ll replace the brake pad
• or I’m replacing the brake pad

So the speaker is saying they are willing to replace it, regardless of the cost.

In Portuguese, the present tense is very often used for a near future or a firm decision, just like in everyday English we sometimes say:

• I’m doing it tomorrow
• I’m buying it anyway

So:

• Troco o calço de travão can mean I replace the brake pad in a general sense,
• but in real context it often means I’ll replace the brake pad.

If you wanted a more explicitly future form, you could say:

• Trocarei o calço de travão

But that sounds more formal or less conversational.

Portuguese often drops subject pronouns when the verb form already makes the subject clear.

• troco clearly means I
• so eu troco is possible, but eu is usually unnecessary

Compare:

• Troco o calço de travão = I’ll replace the brake pad
• Eu troco o calço de travão = same meaning, but with extra emphasis on I

You might include eu if you want contrast, for example:

• Eu troco o calço de travão, tu pagas.
  • I replace the brake pad, you pay.

Calço de travão is a car/mechanical term. In European Portuguese, it refers to a brake pad or brake shoe, depending on the system and context.

Word by word:

• calço = literally something like a wedge, block, support, or pad
• travão = brake
• calço de travão = brake pad / brake shoe

In ordinary learner-friendly translation, brake pad is usually the safest choice here.

In European Portuguese, travão is the usual everyday word for brake.

• Portugal: travão
• Brazil: often freio

So for Portugal Portuguese, calço de travão sounds natural. A Brazilian learner might expect freio, but in European Portuguese travão is the normal choice.

Using o suggests a specific brake pad already known from the situation.

• o calço de travão = the brake pad
• um calço de travão = a brake pad

So the sentence implies something like:

• the speaker already knows which part needs replacing
• or the speaker is talking about the relevant brake pad in that vehicle

If you said Troco um calço de travão, it would sound less specific.

This is a very common Portuguese structure meaning:

• even if it is expensive
• even if it turns out to be expensive
• no matter if it’s expensive

The expression nem que... often introduces something the speaker accepts despite inconvenience, cost, difficulty, etc.

So:

• Troco o calço de travão, nem que seja caro. = I’ll replace the brake pad, even if it’s expensive.

It expresses determination: the speaker will do it anyway.

Because after nem que, Portuguese normally uses the subjunctive.

• ser → seja = present subjunctive
• not é = present indicative

So:

• nem que seja caro = even if it is expensive

The subjunctive is used because this is not being presented as a plain fact; it is a possible condition or concession.

This is one of those patterns worth memorising:

• nem que seja...
• mesmo que seja...
• ainda que seja...

These usually trigger the subjunctive.

Caro means expensive, and here it refers to the implied cost of the replacement/job/part.

So the sentence does not mean that the brake pad itself is somehow “dear” in an emotional sense. It means:

• replacing it may cost a lot
• but the speaker will do it anyway

Grammatically, caro is masculine singular, matching the implied thing being described, such as:

• o conserto (the repair)
• o calço (the pad)
• isso (that)

Portuguese often leaves that reference implicit.

Yes, but the nuance changes a bit.

• nem que seja caro = even if it’s expensive / no matter if it’s expensive
• mesmo que seja caro = even if it’s expensive

Both are possible, but nem que often sounds a bit more determined or forceful in this type of sentence. It can carry the feeling of:

• I’m doing it anyway
• I don’t care if it’s expensive

So nem que works especially well when the speaker is insisting on a decision.

The comma separates the main statement from the concessive part.

Main statement:

• Troco o calço de travão

Concessive clause:

• nem que seja caro

In English, we often do the same:

• I’ll replace the brake pad, even if it’s expensive.

The comma helps mark the pause and makes the sentence easier to read.

Grammatically, yes, it is singular: o calço = the pad/shoe.

Whether that sounds natural depends on context:

• maybe only one specific pad/shoe is being discussed
• maybe the sentence is just a simplified example
• maybe the speaker is referring to one unit generically

In real automotive language, people might also talk about the plural if several are being replaced. But as a grammar example, the singular is perfectly fine.

It sounds decisive and practical.

The speaker is basically saying:

• I’m replacing the brake pad, even if it costs a lot.

So the tone is one of firm intention, not hesitation. It suggests that safety or necessity matters more than the price.