*This rotor fits the following vehicles which have OE one-piece rotors (345x30). RB's two-piece rotors are made to the exact diameter (340mm) where the pad contacts the rotor to eliminate the rusty rotor lip that forms on the outer edge of the OE rotors.
CLK55 AMG (W208) 05-06
CLK55 AMG (W209) 05-06
SLK55 AMG (R171) 2006-08
RB rotors are made with 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 treatedSurface:
EDP Coating w/cross cut grinding on friction surface
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 both street and track. Not only will the rotors last 3 times or more longer than competitions' two-piece rotors, they can deliver 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.
NOTE: Retaining and jack screw holes might have been eliminated to prevent the screws from stripping and breaking, causing tremendous effort to remove and replace the rotors. Our two-piece rotor hats are made of aluminum which is easier for installation and removal. See detail view here.
Click here to learn how RB two-piece rotors are built differently than the competition.
Rotor Ring: D401-02
- Alloyed iron formula adds strength and heat resistance. Heat
treating further improves rotor performance for a more uniform and
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)
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
- 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
Two-Piece Feature Comparison Chart