It's a fair bit lighter than a straight 44mm headtube plus you generally don't really need the increased diameter at the top of a 44mm (in steel anyway) - fork steerer doesn't need the internal space and the toptube doesn't need the weld surface area
It's a fair bit lighter than a straight 44mm headtube plus you generally don't really need the increased diameter at the top of a 44mm (in steel anyway) - fork steerer doesn't need the internal space and the toptube doesn't need the weld surface area