Titanium bottom bracket shells - ISO threaded 68.5mm and 73.5mm

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sku # BBTI-ISO-68.5, BBTI-ISO-73.5 These titanium ISO bottom bracket shells (39.9mm outer diameter) are available in 68.5mm and 73.5mm widths. These shells are made with an extra . 5mm of width ensuring sufficient material for facing both sides. At the end of the facing process, they will then be 68mm and 73mm respectively. Proper orientation can be identified by the slight groove machined into the drive-side edge. ISO aka BSA, BSC, BC, British, and Euro. Right and left threaded (ISO) 1.370" x 24tpi. 68.5mm - 88g 73.5mm - 95g Weights are based on representative samples. Actual weights may vary slightly. Imported. Show more