I have the Remus 8 for my 2018 GSA.
I bought the racing version - though they shipped the standard version first and I had to send it back.
I had had a number of akrapovic previously but fancied a change from the price and the dry rasp it makes.
Love the sound. I still have the baffle in as it was plenty loud and in fact the can sounds better as I get more mileage on it.