Originally Posted by
itturriko
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I saw that Lasse Norman Hansen made 1'01" in the Kilo and 13,4 in the 250m flying lap with the T4 so I think it is stiff enough for me but I don't know why people only use it on endurance.
Cervelo sais that they improved the stiffness of the Bottom Bracket.
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There was a post on this forum recently explaining that some Cervelo bikes ridden by top riders are different than those available in stores.
Also many riders here do not like aero seat tubes ( aero posts in general can slip or if broken, can be hard to replace).