haha, bb= bottom bracket. the round bit right at the bottom of the seat tube, down tube and the chain stays http://www.goodcarbonbike.com/blog/wp-content/uploads/2011/04/4.jpg this bit.
This may not be the case, but it is on my bike
@Ashley_K started
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haha, bb= bottom bracket. the round bit right at the bottom of the seat tube, down tube and the chain stays
http://www.goodcarbonbike.com/blog/wp-content/uploads/2011/04/4.jpg
this bit.
This may not be the case, but it is on my bike