I'm assuming that's on the right side of the bike near the floorboard/Peg area? Yes, not stock - it's been replaced - but it's 1 of the 2 oil drain plugs. That one is the more "Basic" looking plug - the other one is in up at an angle and much longer with 2 gaskets on it.
OEM drain plugs are 6mm hex and 43 / 41 mm torx. that hex plug would be aftermarket, and 1 of 2 as said above
Not to nitpick but to give accurate information - stock plugs are 6mm Allen and 45 Torx.
Many Shade Trees or do it yourselfers have mixed things up and stripped the original stock ones (or over tightened them/etc) - so folks like Lamonster and others came out with the socket versions to replace the stock ones and make them uniform instead of 2 different tools.
Not to nitpick but to give accurate information - stock plugs are 6mm Allen and 45 Torx.
Many Shade Trees or do it yourselfers have mixed things up and stripped the original stock ones (or over tightened them/etc) - so folks like Lamonster and others came out with the socket versions to replace the stock ones and make them uniform instead of 2 different tools.
For anyone with a 2020 and newer RT that does their own oil change, I would strongly recommend getting the replacement plugs to prevent future stripping of the internal headed plugs. To make your life a whole lot easier when you do this, start by reversing the pin for your brake rod. It has a Allen headed bolt and a 10mm nut with the nut toward the center of the bike. Turning this around will put the head toward the center and eliminate the clearance issue of getting a straight shot on the oil drain plug.