Well I’ve got a size large Alu (Same Geo as carbon), NX Revs build and I’m 5’11, perfect fit. Amazing bike. It’s so stable and grips like hell, be prepared to beat plenty of full suss riders which is great fun! I was going to buy a full suss in addition to this bike by probably wont bother now as I’m worried that I’d never ride it, its that much fun!