I think they are die cast Dog. Look at the cut flutes in the rear wheel. Sloppy to say the least. Billet would be totally smooth and polished.
I also don't see Triumph paying for Billet. They didn't even spend the extra money to tuck and finish the flange on the bottom of the gas tanks for goodness sakes. My front Speedy wheel has so much imperfection it looks like its made of painted rod iron lol.
I could be wrong.
