STILLEN is proud to offer an active brake cooling option for R35
GT-R owners looking to improve track times and lower brake
temperatures. These kits are for use with both traditional iron
rotors, as well as the STILLEN Carbon Ceramic Matrix Brake Kit.
During the development of the STILLEN GT R Targa rally car Team
STILLEN worked very closely with the engineers at AP Racing to
develop the first aftermarket Carbon Ceramic Brake Kit in the
world. One of the key components of that kit was brake cooling.
Carbon Ceramic Brakes have an ideal operating temperature range
where they perform at their best. Carbon Ceramic Brakes work well
when cold however their true performance shines through during
repeated hard, high temperature braking. However, there is a
temperature threshold which should not be exceeded. During the
development of the kit the engineers at AP Racing asked what we
would be doing for brake cooling. We were open to all input from AP
and their instructions were to use external fans directing air to
the rotors and calipers. They said regardless how hot the air is
coming off the engine, it's a lot cooler than the heat coming off
the rotors.
To test the performance of the STILLEN Active Brake Cooling Kit, we
went to El Toro Air Force Base with temperature sensors on each
rotor and caliper. We performed the tests with the active cooling
on one side of the car, and not the other. We performed a series of
140-0 runs as well as laps around our test track. We also put
temperature sensor stickers on each caliper that act just like
temperature paint for the rotor. As the temperature of the caliper
increases it burns off parts of the sticker so we know how hot the
caliper is running. After all of the data was collected and
analyzed we determined that with this brake cooling kit we
successfully reduced rotor temperatures by over 200 degrees.
The front brake cooling kit consists of a weather resistant
electric fan, mounting brackets, wiring kit and switch, and
poly-urethane air diversion splitter. The rear brake cooling kit
consists of poly urethane air scoops which take advantage of the
factory naca ducts in the belly pan, accordion tube, polyurethane
air funnel and mounting bracketry.
The STILLEN brake cooling kit is going to be offered as a separate
front and rear kit. During our testing we also found that with the
VDC off, the rear brake cooling isn't 100% necessary. Because
brakes work better with a bit of heat in them we prefer to leave
the brake cooling kit off of the car when Steve Millen drives
because he does not utilize the VDC control system. If you are like
99% of the owner's of GT-R's you more than likely utilize the VDC
function and therefore we recommend the rear brake cooling
system.
These kits, while developed to aid in the necessary cooling for the
Carbon Ceramic Brake setup, this kit is also extremely effective in
lowering caliper/rotor temperatures for both stock iron rotor
setups, as well as the AP Racing iron rotor upgrades
Made in the U.S.A.
