Stainless steel bottom bracket shell - ISO threaded - 69mm

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sku # BBSUS-ISO-69 Made from 17-4 stainless steel bar stock, these 38.1mm (outer diameter) ISO bicycle bottom bracket shells are 69mm wide. These BB shells are made with an extra 1 mm of width ensuring sufficient material for facing both sides. At the end of the facing process, they will then be 68mm. Drive side can be identified by the slight gap/recess on the drive side before the threads begin. These BB shells are recessed on the inside to make them compatible with Paragon's heat-sinks. ISO aka BSA, BSC, BC, British, and Euro. Right and left threaded (ISO) 1.370" x 24tpi. 69mm - 99g Weights are based on representative samples. Actual weights may vary slightly. Imported. Show more