We have a new £2 million machine installation with hundred's of pieces - it's hidden amongst them, well, it was there when I acquired it actually
I have a similar set of forks. The earlier fg8750 with radial bottoms. Is that a big hub front wheel too?
billet....nah, swing arms are generally made from several component parts to get strength in one place and flex in the other.
Moto 2 ones I’ve seen have been 1 piece. Sure a fella I met with a vds ex Marquez bike in Spain did. Certainly no signs of weld in usual spots
View attachment 142655 This is what’s going on the bike. It’s a one piece magnesium arm 20mm longer than standard with a magnesium eccentric hub and a billet machined top link.