How RB two piece rotors compare to the competitions:

  RB Competition Feature Comparison RB Benefit
Rotor Design Center Mount Surface Mount Center Mount admits cool air from both IB & OB vs. IB only Cooler brake
Rotor Hat Material (Al) Forged Extruded Forged aluminum is stronger (BHN~115) vs. extrusion (95) Stiffer and Stronger
Hadware Assembly Self-locking (M6) Use Loctite (M5) M6 vs. M5 bolts; 2pc vs. Multiple pieces Self-locking provides consistent torque at any temperature
Disc Material (CI) SAE G3500 BHN~190-220 ? Certified casting hardness vs. unknown Harder iron= higher strength & durability for consitent brake torque delivery
Disc Treatment Heat Treated ? Heat treatred casting vs. unknown Reduce the chance of warping & cracking during heat cycles
Rear Rotor Hat Has iron sleeve for drum emergency braking ? RB rear rotor is 100% compatible with OE drum brake Not just make to fit brake shoe, RB is 100% compatible with OE rear drum brake

How RB rear two piece rotors are made differently from others

RB Center-Mount 2 piece Rotor Advantage Over Conventional Surface Mount.



 1. RB two piece rotor runs cooler than competitions

  • Convergent vane design:


2. RB uses less components:

RB Center Mount design provides widely open & Un-restricted "Air Ports" from both Inboard and outboard while other brake companies try to achieve the same by "directional hats". Without regarding how effective it is, they need 4 components (2 hats, 2 discs) for a pair of rotor vs. RB's 2 components (1 hat, 1 disc-unidirectional)




Stoptech - Requires 4 different components (2 hats, 2 discs) for a set of directional rotor vs. others' 3 components (1 hat, 2 discs), vs. RB center-mount design (1 hat, 1 disc)



3. RB center mount design saves installation space and allow using a deeper pad w/o interfering with the hardware.


4. RB self-locking design w/o using loctite so to retain torque consistent at any braking temperature:


  • Illustration of disc movement (sliding) during heat expansion & contraction:


4. Rotor Treatments:

Disc is heat-treated before machining to minimize the casting from warping during the extreme heat cycles.

Rotor surfaces are treated by EDP (ElectroDeposititon Process) with Black Paint, so all the internal vanes, corners, crevices are penetrated and coated, unlike plating which can only reach the external surfaces.

With only a few stops the paint in rotor surface where the pad in contact will be removed, while the rest area remains protected by EDP paint (surface or internal vanes). So the rotor will have a nice look w/o undesirable rusty area like OE or others.

RB Rotor:


After Installed:

 After a few stops:


See the complete review here (Corvette ZR1 CCB to iron rotor conversion)

            [ZR1] light weight steel rotor replacement


Trackhawk/WK2 OE two piece:


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