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Kinda hard to tell per the engrish description. It looks like they are saying the regular spoiler needs to be drilled.
It is the material of rubber aero spoiler attached to the rear end of the car aero package. Conducted wind tunnel test vehicle at STI, increase downforce by rectifying the air subjected to surface wing without increasing the (CD) air resistance, this product was developed property ground of the drive wheels at high speeds improve.
※ drilling it is necessary for mounting the rear spoiler
I would assume it's just a sticky tape install.
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