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RB BBK (390/390) with Front 6 & Rear 4 Pot calipers for Mercedes G63/65; GL (X164), ML (W164) (P/N 2222 & 2426)
RB Calipers & Iron Rotor Brake Kit for Mercedes ML63 (W164) 2007-11 & other Mercedes SUV (P/N 2222 & 2426)
This product photo is for reference only.
Our Price: $7,280.00
Sale Price: $6,552.00
You save $728.00!

Price with Selected Options: $6,552.00
Size: See below
Rotor Wt (lbs.): See below

Product Code: MB-IRP-02

Caliper Color:

(6 Pot-Black) - Subject to Availability. [Add $260.00]

This kit includes:
  • 2 RB 6-Piston front caliper (6061-T6 forged aluminum alloy)
  • 2 RB 4-Piston rear caliper (6061-T6 forged aluminum alloy)
  • 2 Front RB Iron Rotors (390x36mm)
  • 2 Rear RB Iron Rotors (390x30mm)
  • 4 Aluminum adaptors
  • 1 Car set of RB street performance brake pads (see options to upgrade)
  • 1 Car set of stainless steel brake lines
  • Motul RBF 600 Brake Fluid

Due to the variety of aftermarket wheels, we recommend checking your wheel clearance with our kit prior to installation to confirm fitment. Click here to download the wheel fitment template for these kits.

Replacement Components:
Front Rotor Ring: D601-05
Rear Rotor Ring:
Front Pad:
Rear Pad:

Features and Benefits:
  1. Easy, bolt on installation.
  2. Stainless steel one piece piston reduces heat transfer to brake fluid.
  3. Built-in dust seals, no boots to burn out like OE's external dust boots.
  4. Pad springs in all four corners provides tight fit of brake pads - no slippage, no rattling noise like OE's loose fit (no springs).
  5. Pads are secured by two M6 hex socket bolts to positive lock the pads in place and replace the pads easily with allen wrench allows for easy brake pads changes without needing to remove calipers.
  6. RB caliper are engineered in the pistons size and position to improve braking efficiency and taper wear.
  7. Calipers are precisely machined in every corner and cut.
Download comparison chart of RB caliper vs Alcon and OE (Brembo).

Rotor Weight Comparison:


Size (mm) Wt (lbs) Size (mm) Wt (lbs)
OE One-piece Rotor 390x36 36 360x26 25.3
RB Two-piece Rotor 390x36 28 390x30 20.8

Caliper Design:

- Caliper Body: Made of forged aluminum alloy designed and built for the toughest brake jobs with extended service life before any rebuild is required.

- Low Profile: Together with RB Center-Mount design two-piece rotors, you hardly even need to require a spacer to install the kit.

- Pistons: Stainless steel instead of aluminum commonly used by other caliper mfgrs which can substantially reduce the heat transfer (approx 1/10 of aluminum) from the pad to brake fluid. Pistons are vented to further reduce the heat contact area and improve air circulation thereby reducing more heat transfer.

- Dust Seal: Our dust seal is of built-in type (instead of external boot type) uniquely designed to shield the dust and foreign material from contamination and will not rip - as commonly seen on boot type dust seals. Piston

- Hardware: Brake pad pins and banjo connections were re-designed for easier brake line connection and brake pad replacement.

- Surface Coating: Powder coating available in red and yellow colors.

- Hardware: Most hardware is made of stainless steel for durable performance and appearance.

- Never Get Lost Bleeder Cap: Newly designed with a retaining loop so you will never have to find it again and/replace the lost ones. (made of durable EPDM) Piston

- Use standard FMSI brake pads : A very common P/N is used with these calipers.

- Made in USA: Calipers are designed, fully assembled and hydro-tested in our Fullerton, CA facility, with full after sales support/service.

Rotor Design:

Our unique and patented rotor designs make our discs cooler and last longer.

  1. Convergent vane design

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

  2. Center-mount design

    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. True floating design

    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.

  4. Iron sleeve insert
RB aluminum rotors hats are constructed of aluminum with an iron sleeve insert. This allows for significant weight savings while still preserving the use of the stock emergency brake. This design is only available through RB.

Two-piece Disc Surface Finish

Related Links:
Feature Comparison Two-piece Rotor

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