Originally Posted by
jsigone
I'd agree and the Stans Alpha 400s are the tubeless version of the A23s.
Are you sure about this? Looking at the Stan's website would suggest that the Ironcross are closer to the A23 than the Alpha400's, which are only 20mm wide and considerably more aero shaped rather than V. However, the Ironcross are quite light (sub 400) and disc brake only.
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