Cartridge BB - solid axle - steel cups - axle L. 115.5 mm for triple crankset with oversize seat tube Ø 32 or 35 mm. For the 2006 range the Mirage™ groupset sees the introduction of a dedicated bottom bracket that provides tolerances and geometries of the bottom-bracket spindle that have been optimized to obtain coupling with the cranks and an ideal chain line. New Mirage™ 115.5 bottom bracket: bottom-bracket spindle geometry optimized for precise 3x9 chain line.

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