Originally Posted by
jurth
I might be late to the tread, but just want to point you to Curve GMX, it seems very similar to the Cutthroat in terms of geometry and purpose. However it uses road crack, and support much bigger chainrings. It is titanium though, so it might not be what you are after.
/Jonas
Curve is very close to releasing the updated GMX frame version.
Mason ISO is a UK steel frameset option. Would need to contact them to confirm 2x possible, I think.