HKS
is
the
first
to
release
the
high
heat
range
tuning
spark
plug
M12
long
reach
HEX
size
14
for
86,
BRZ
and
GT-R
to
the
market.
R35
GT-R
stock's
heat
range
is
the
same
as
NGK
8,
NGK
9
to
86/BRZ,
and
the
new
HKS
M50HL
is
the
same
as
NGK
10.
It's
for
a
high
tuning
vehicles.
Reinforced
by
making
the
outer
electrode
bigger(see
the
pictures
below).
Also
could
have
a
steady
ignition
and
ignition
speed
at
a
high
load
and
high
RPM
by
putting
the
center
electrode
in
the
middle
of
the
spark
plug.
Improved
the
anti-taint
property
by
making
thermal
edge
to
prevent
the
carbon
buildup
which
occurs
for
the
tuned
engines.
