a frame including a head steering end portion, the head steering end portion defining a central axis, a lower portion and an upper portion;

a lower bearing;

an upper bearing;

a fork including fork legs joined at an upper portion defining a fork crown, the fork also including a fork head and axis shaft attached to the fork crown, the axis shaft having internal and external threads and defining a rotational axis of the fork, the lower bearing disposed between the fork crown and the lower portion of the head steering end portion, the fork head extending in front of the head steering end portion when the axis shaft is inserted into the head steering end portion;

a headset cap with the upper bearing disposed between the headset cap and the upper portion of the head steering end portion, the headset cap being threadably engaged to the external threads of the axis shaft and having a hole aligned to the internal threads, the upper and lower bearings being under an axial load between the headset cap and the fork crown for preloading the upper and lower bearings to align the rotational axis of the fork to the central axis of the head steering end portion;

a handlebar mount having an aperture and a recess, the handlebar mount attached to the fork head; and

a headset locking screw disposed through the hole of the headset cap and threadably engaged to the internal threads of the axis shaft with a head of the headset locking screw disposed within the recess of the handlebar mount, the headset locking screw insertable through the aperture of the handlebar mount for adjusting engagement of the headset locking screw to the axis shaft, a head of the headset locking screw being disposed within the recess of the handlebar mount for promoting laminar flow of air about the handlebar mount;

a height compensator disposed between the handlebar mount and the headset cap and threadably engageable with the headset cap to support a load of the handlebar mount.