RB Two-Piece Brake Rotor (Slotted) - Z51 REAR 06-12 PAIR
Part Number: 2069-311 Side: L/R Position: REAR Size: 330x24mm (13" x 0.9") (OE is 330x26mm) Rotor Weight (lbs.): 19
Rotor Material: Racing Formula Alloyed Gray Iron & Heat treated Machining: Straight Slot 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.
NOTE: Our two-piece rear rotor hats for models with drum brakes are made of cast iron which retains the stock e-brake system.
Weight Comparison
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One-piece |
20.1 lbs. |
Two-piece |
19.0 lbs. |
Weight Savings: 1.1 lbs.
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Replacement Components
Rotor Ring: D306-03-311
Installation note:
Trim the back plate edge approximately 2-3mm (0.1") to avoid interference with the rotor.
Material:
- Alloyed iron formula adds strength and heat resistance. Heat treating further improves rotor performance for a more uniform and stabilized microstructure.
Design:
The cooling vanes are of a convergent nozzle design, which increases airflow and turbulence and makes discs cooler. (Illustration #1)
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.
- 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.
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