The
main
purpose
of
the
stock
sized
pulley
is
to
lose
as
much
weight
off
the
crank
pulley,
and
turn
that
extra
lost
weight
into
HP
Gains.
These
do
not
underdrive
the
accessories,
and
work
great
with
superchargers
or
competition
stereos.
One
Crank
Pulley
2
belts
are
included
with
every
UR
Pulley
order.