Cult Mid Bottom Bracket
* precision sealed MID bearings *
* machined aluminum bearing cones *
* extra crank arm spacers *
* 19mm and 22mm *
NOTE: The inner diameter of the bearing is determined by the spindle diameter of your crankset, most bikes come stock with cranksets having a 19mm diameter spindle. Check the specification of your crankset to see what size spindle it uses. Any questions please contact us.