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hand-made mold distinguishing from general molds made by NC line cutting
prolonging the lifespan of the bearing
Mortop developed a whole new texture of natural sandstone
with the inner and outer tracks designed with precise angles to perfectly combine the radial vertical pressure when pedaling with the axial lateral thrust when rocking the bike
it's a direct upgrade without modification
Propelling BB 24 Ultra Select Spindle (mm):24/22 hand-made mold distinguishing from generalPropelling BB 24 Ultra is suitable for 24mm spindle Shimano HT II and Sram GXP 22 24 mm with ceramic ball angular contact bearing means ideal mate for your bike.
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