I ran across this rear window defector. I give it a big thumbs down. A total waste of $168. Would you buy it? Gt Styling 51162: Dodge Challenger Rear Window Solar Wing 2008-2021 (sfxperformance.com)
I'm usually not one that likes add-ons to a beautifully designed ride in most cases. I would pass on this particular one as well. Some owners really enjoy making their rides a bit different so that's perfectly fine and it is certainly not hideous by any stretch, like 24"+ rims or something. When my Mustang was new back in '07 the dealer added on a Shaker. I really liked it and I felt it improved the looks over the basic hood scoop, so I can be on either side of the aisle with physical mods. Not this 'solar wing' though.
Not appealing. Because I haven't found louvers for my 335's I've added carbon fiber rear window / roof spoilers which lie nice and flat / completely attach to the glass. https://www.ebay.ca/itm/191388736784?hash=item2c8fa85d10:g:93MAAOSwajVUSwAi