A bicycle headset assembly is mounted to a steering tube extending through a
head
tube of the bicycle. The headset assembly includes a race connected to a top end
of the bicycle head tube and a bearing set is engaged with an inner periphery of
the race. A positioning ring is engaged with an inner periphery of the bearing
set and mounted on the steering tube. A cap is mounted to the race and presses
the positioning ring. A pressing ring is mount to the steering tube and presses
on a top surface of the cap by the handlebar stem.