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  • MrSmith i would have thought a modern external bb crankset would save a lot of weight but i don't think a track one exists? maybe a ti square taper bb would save a fair bit?

    Here is my TUNE AC38 Ti bb at 156g - by comparison I have a Hatta R9400 steel BB (pretty much the same as Sugino's BB) which comes in at 324g.

    I wouldn't recommend a Ti BB for fixed, it is pretty noodly, visibly flexed under power, enough to throw your chain under extreme loading.

    P.S. Tune AC38 Titanium BB for sale !

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