Hi guys basically I want to know if I can kit upgrade speakers in the back of my fabia

Standard are 4" would 5" fit instead or is it only a must for the 4" I need new

Thanks nick

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Sure theyre 4?

I think my fabia mk2 has 6.5's in the front and 5's in the back. But could be wrong

Not sure if u have done this yet?? I've just done mine they are 4" drivers you need.handy tip, there are no adapters for the rears either, you will need to separate the wires two to each block and marry the corrosponding wires together ie blue/white to blue/white and brown white to brown white, the wire on the drivers side are a different colour but same principle! Took me awhile to figure out lol