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RB 2pc Rotor for Mazda Miata MX-5 NC (06-15) Front
RacingBrake Front OE Two Piece Replacement Rotor for Mazda Miata NC 06-15
This product photo is for reference only.
MSRP (pair): $665.56
Sale Price (pair): $599.00
You save $66.56!

Price with Selected Options: $599.00
Size: See below
Rotor Wt (lbs.): See below

Availability: Usually Ships in 6 to 8 Weeks
Product Code: 2228

RB Pads for MAZDA

ET300 - Street (PD1179-33) [Add $58.26]
ET800 - Spirited (PD1179-38) [Add $102.24]

Rotor Kit Includes:
  • 2 ea. 2pc rotors
Weight Comparison
OE 1-PC (290x22) 14.3
RB 2-PC (290x22)
Weight Savings: 4 lbs/ea

Features and Benefits:

These two-piece rotors were engineered to be the best stock replacement two-piece rotor on the performance market. This rotor is direct bolt-on, easy to install, no additional hardware needed, and an excellent upgrade for that delivers consistent brake torque under extreme heat, session after session. When it comes to replacement - operating cost over the time will be lower than one-piece rotor.

RB rotors are made of harder iron than OE rotors. Our rotors are most compatible with semi-metallic brake pads. We do not recommend the use of ceramic brake pads, which may cause vibration.

Rotor Material: Racing Formula Alloyed Gray Iron & Heat treated
Machining: Slotted
Surface: EDP Coating w/cross cut grinding on friction surface

Click here to learn how RB two-piece rotors are built differently than the competition.


  1. Alloyed iron formula adds strength and heat resistance. Heat treating further improves rotor performance for a more uniform and stabilized microstructure.


  1. The cooling vanes are of a convergent nozzle design, which increases airflow and turbulence and makes discs cooler. ( Illustration #1)

  2. The center-mount flanges for hat mounting to the rotor ring have several benefits. ( Illustration #2)
    • It allows the ring to be used on either side of the vehicle simply by mounting the hat on either side of the ring (unidirectional).
    • The stress load transferred from the ring to the hat is balanced.
    • Air inlets are widely open to both inboard and outboard sides of the rotor. More air suctions and even temperature on both sides of the disc surface.
    • Heat transfer from the disc surfaces to the hat is even and minimized by increasing the flange length and the airflow around the flanges.
    • Mounting flanges are on both friction surfaces ultimately provides excellent heat balance.
  3. Exclusive full floating design with 10.9 grade alloyed hardware. Hardware is DACRO coated and crimp locking. DACRO is highly corrosion resistant and provides a film for easier movement between the hat and rotor ring as disc expands and contracts and the crimp design provides positive engagement without rattling or torque loss at temperature.

Related Links:
Two-Piece Feature Comparison Chart

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 2pc Stock size RB rotors July 31, 2019
Reviewer: Andy from Fountain Valley, CA  
I just tested front RB rotors on NC Miata on the track Streets of Willow . Watch video at youtube DIY Racing46.
Brakes are performing great under very having braking lap after lap. I even set my best time at 103F heat . Rotors were glowing red but performance was maximum at all times .  I was able to brake latter and shorter than before upgrade to RB rotors , brake pads were the same DTC 60 .
it was very easy to install and it looks great on the car .

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