100 mm English Bicycle Bottom Brackets
The bottom bracket shell width is the width, in millimeters, of the frame where the bottom bracket is mounted.
Bottom brackets must fit the frames interface type. For example, an english threaded bottom bracket can only be installed on a frame that accepts english threading.
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FSA’s MegaExo Light spindle is 24mm in diameter, uses an “Arc Spline,” and is used on K-Force Light, SL-K Light, and the Team Issue cranks.