Porsche 911 GT3 RS User Handbook Manual page 54

Porsche Ceramic Composite
Brake (PCCB).
Optional for the 911 GT3 and the
new 911 GT3 RS is brake tech-
nology that has already had to
withstand the harshest require-
ments of motorsport: the Porsche
Ceramic Composite Brake (PCCB).
To enhance braking performance,
the ceramic composite brake
discs in PCCB have a diameter
of 380 mm at the front and
350 mm at the back. They are
made from a specially treated
carbon-fibre compound that is
silicated in a high-vacuum process
at around 1,700 °C. The resulting
brake discs are much harder
and more resistant to heat than
standard discs.
PCCB is characterised by its low
thermal expansion which prevents
deformation under heavy braking.
Furthermore, the ceramic brake
discs are totally resistant to
corrosion and offer better noise-
damping properties.
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The use of six-piston aluminium
monobloc brake calipers at the
front and four-piston units at the
rear ensures extremely high
brake forces which, crucially, are
exceptionally consistent. The pedal
response is fast and precise
with only moderate input required.
All the prerequisites are there for
a short braking distance, even in
the toughest conditions. Moreover,
safety when braking from high
speeds is increased thanks to
PCCB's excellent fade resistance.