The
HKS
downpipe
extension
kit
for
the
new
2017+
Civic
Type
R
replaces
the
factory
downpipe
and
front
pipe
with
3-inch
unrestricted
pipes!
This
downpipe
kit
removes
both
OEM
catalytic
converters
so
O2
sensor
defoulers
or
a
tune
is
needed.
Along
with
the
full
suite
of
HKS
bolt-ons,
the
HKS
Race
Extension
Kit
pushed
the
car
to
383
HP
and
376
TQ
on
100
Octane
fuel
(346
HP
and
360
TQ
on
91
Octane).