Urban Velo

BB Height Vs.Drop

Bottom bracket height affects bicycle stability and pedaling clearance, and is an important specification to consider when choosing a frame or otherwise looking at geometry charts. Generally speaking, road and touring bikes have low bottom brackets for stability over the long haul, while track and mountain bikes sit higher for ground and cornering clearance. Confusion may arise when comparing geometry specifications from different manufacturers as some quote bottom bracket height and others quote bottom bracket drop, here we explain the relationship between the two.

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