These new fangled Bottom bracket beraing that come on all the bikes now are the only ones that I would consider changing to Ceramic. I have Dure ace and Ultegra BB's and compared to the "Old" style BB's- they don't turn that easily. They may be a better design- but the friction seems to have gone up manyfold.
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How long was I in the army? Five foot seven.
Spike Milligan