>>1361687>>1361694>>1361705Wiggo used them and so does Froomey, and so have other top riders, but then again many top riders don't use them too. If there was a huge benefit surely everyone would be using them, so I'm guessing it's a matter of preference / personal pedalling style / whatever.
Also:
>>1361687>bmxWhy the FUCK would you need optimal power delivery on a fucking BMX?