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Weight: 109 g.
The Hope Ceramic External bottom bracket runs smooth as silk, with no hint of play, grind or grumble over the long haul. Machined aluminum cups hold Swiss-made ceramic bearings, designed to run directly on the axle without the use of shims or spacers. Non-contact, free-running labyrinth seals protect the bearings externally. Internally, the machined aluminum center tube is sealed with o-rings. The bearings are removable and fully serviceable for a greater life span. Suitable for 68 or 73mm shell. 109 g.