This is the optional rear speaker kit which was available as a dealer installed option.
Your wiring, and hole is already there behind your seats, and the space for speakers is about the same as the front ones.
You can easily do without this kit and just install aftermarket grills, so this is for the Insight nut who wants to have one of the few optional accessories in their beloved car.
These have been discontinued from Honda.
This is not mine, and is a bit pricey, although seller is accepting offers.
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