Abstract: A modular steering headset for use on a bicycle having a frame with a head tube secured thereto and a fork with a tubular upper extent, the steering headset including a pair of annular cups with each cup secured to an end of the head tube; an upper and lower pair of rigid annular raceways secured within the cups around the upper extent of the front fork to create an upper annular channel and a lower annular channel; a pair of bearing cages disposed around the upper extent of the fork and within the channels; and an adjusting nut threadably coupled to the upper end of the front fork and tightened to secure the bearing cages between adjacently located raceways, thereby rotatably coupling the fork to the head tube.