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This
stock rotor direct replacement offers you the best value for
immediate improvement of your brake performance at a price often
lower than you would pay to a car dealer for an OE replacement.
Our
rotors are not just made to fit, like aftermarket replacements, nor
like some of our competition that buy ‘off the shelf’ stock rotors
and drill or slot merely to meet the “performance” look.
We make real performance rotors
from the ground up. First comes design. A CMM is used for precise
measurement, then 3D computer modeling is used for design with
improvements to make up the shortfalls of OE design and for
performance enhancement. The following examples are proof of our
superiority to OE or competition.
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Reinforced Rib
This patented design is added to improve the strength of Subaru’s
WRX rotor based on our exclusive design criteria of “Torque Ratio”. In addition, the ribs also increase air circulation.
The result is that our rotors don’t have the same problem of warping
as OE rotors. Subaru enthusiasts love our
rotors because our better design results in a
stronger and cooler rotor.
Similar reinforced ribs are added to other rotors with the same
criteria for other applications.
Curved Vane
Some of our ventilated rotors
are selectively upgraded from OE straight vanes to curved vanes as we
deem necessary for performance, as most people are aware that curved
Vanes pump more air and keep discs cooler than straight vanes.
However, curved vane discs are “directional,” meaning that the left and
right discs are different and require two sets of tooling at the factory.
Straight vane rotors can be made from the same single set of tooling.
We spend more time
and money in extra tooling. Our products are based on performance needs, not just
cost. We invite you to check around in the performance market and
see if any manufacturer offers the same upgrades as RacingBrake.
Click here
to see details of application list |
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Material
Our rotors are made of material upgraded from the OE standard of SAE
J431 Class G3000 (30,000 psi in tensile strength, 187-241 in Brinell
hardness). More important is our know-how and experience over
decades in cast iron metallurgy. All rotors may appear the same but
under a microscope there is a world of difference in metallurgical
structure, which per ASTM A-247 the type (shape) of graphite shall
be VII or flake graphite with “A” type uniform distribution and
random orientation, and graphite size.
These are published data but
achieving the optimal casting requires years of metallurgical
experience and precise control during the casting process. Carbon
(graphite) contents and structure greatly dictate the mechanical
property of the cast iron for a brake rotor. Brake rotors are subject
to sudden and extreme heat load cycles while a is braking.
Proper material and casting can help a rotor perform optimally and be more resistant to wear, without
warping or cracking.
Heat Treatment
Severe brake duty cycles require not only good material but need
proper heat-treatment to relieve the residual stress and further
enhance the microstructure uniformity. Over the years, we have
developed a proprietary process in temperature and time control to
achieve the optimal result. |
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| All of our rotors are machined by
advanced CNC to a general tolerance of ±.004” and ± .002” for
critical dimensions such as parallelism, thickness variation and
indicator runout. We claim our tolerance in figures rather than phrases such as
“tightest in the industry,” like the competition does. These tight
tolerances are our best assurance of fitment, easy break-in and
demanding brake performance without pulsation or vibration. |
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Rotors are subject to rust, and most
rotors are not protected against corrosion in early years. It is not
uncommon to see a rusty rotor on a car dealer’s brand new show car.
When we started our performance line about four years ago, we tried
and experimented with various surface coatings, and found EDP
(Electro-Deposition Paint) gives the optimal result in durability and
cost.
Not only does EDP provide lasting protection against corrosion
(lasting about 500 hours in a salt spray test, vs. 100 hours for common bright zinc plating),
it has an appealing black look. In addition, it is
environmentally friendly, unlike the cadmium or
gold zinc plating (which uses hexavalent chromium) used by the competition.
Both cadmium and hexavalent chromium heavy metals are
classified as hazardous substances and are prohibited from being
used by the EPA (see more discussion at
http://www.finishing.com/60/49.shtml). RacingBrake was the first
company introduced EDP to the performance industry. You may see some
imitators achieve the same black look with a fancy name but they are
not the same as ours. |
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 Our
rotors are protected with anti-rust oil for the friction surface
where the paint was removed by double cross grinding. Rotors are packed in
pairs in a strong and appealing RB logo box, not in a generic white
box. Our quality stands inside and out. |
We stand 100% behind what we make. All RB rotors are cast or imprinted with: TPM (company name), 9004
(Our P/N), MIN THK 22.0 MM, Lot# for identification. Our rotors also
have an engraved direction arrow, where applicable, to assure error
proof installation (Even slotted straight vane rotors are directional).
These marks are not just for identification. They are your assurance and our
symbol of quality racing components. |
| These are just highlights of how our rotors
excel, from OE replacement to high performance brake rotors. RB
clearly leads the way by offering the finest quality performance
rotors in the marketplace. |
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