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@.gaz.
To go with the above:
TA Syrius 48t outer and TA Zephyr 33t inner.
Apparently the Syrius is cut on a lathe like the Zephyr (which is what makes them so durable) but only works with Shimano so they had to rename it - the Campag ones are called 'Nerius'.
Zephyr rings are compatible with any of the major groupsets but only go up to 10 speed for outer rings.
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