What is better a 9t bmx freewheel or a 14t bmx freewheel?
It's not really a question of better, more of different. What
decides how fast the top speed of the bike is, and how nippy it is
off the start is the ratio between the tooth count of the crankset,
and the tooth count of the freewheel. With a smaller freewheel you
can have a smaller crankset, a slightly lighter bike and get the
same feel of the bike as with a bigger crankset and a bigger
freewheel.