I have a Nishiki that's made with Tange Infinity, and it's one of the lighter frame/fork combinations that I've run across -- and that includes several Reynolds 531 frame/fork numbers, Trek 531 frame/Ishiwata fork/stays, etc. Not quite as light as a Columbus SL Motobecane, or SLX Guerciotti, but doesn't miss by much. The fork (Tange) of this Nishiki is also of a weight that compares favorably with any of them.