Jitters Posted December 15, 2008 Report Share Posted December 15, 2008 So I've seen in various places these bottom bracket measurements (i.e. +20, +45 etc.)Could someone enlighten me about what that means?I will assume that the higher the number, the higher the center of the BB is, but is it in mm (above or below) the axle line from front to rear, or from the ground?Thanks for the bit of wisdom! Quote Link to comment Share on other sites More sharing options...
Jimmy_k Posted December 15, 2008 Report Share Posted December 15, 2008 It's the distance the bottom bracket is above the axles and its measured in mm Quote Link to comment Share on other sites More sharing options...
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