Porterfield R4-S Pads AP1291 (Front) Porterfield R4-S Pads AP1291 (Front) Porterfield R4-S Pads AP1291 (Front)

Porterfield R4-S Pads AP1291 (Front)

Eurozone Tuning

  • $ 27995

Porterfield R4 and R4S Brake Pads

In our search for the perfect brake pad with the least amount of brake dust compared to OEM, we landed on a winner: The Porterfield R4-S pad. We tested these on our shop C63s and noticed about 1/4 the brake dust over the same amount of driving time/miles compared to OEM, along with minimal brake fade over heavy use. These are great for daily driving, as well as spirited driving, an occasional track day or autocross.

These are ceramic pads, these are great replacements for your OEM pads with greater longevity, brake bite and feel similar to OEM, and are easy to install.


Porterfield is an American company based in California, and has been in business since 1986. They focus on braking upgrades for most models.

Included is a set of four pads, for the two front rotors.

Fits the following models:

    • Audi:
      • 14-18 RS7 with Iron discs
    • Mercedes:
      • 16-17 Mercedes AMG GT 390mm w/ Red Calipers
      • 19-20 AMG GT ALL w/Iron Discs
      • 12-15 Mercedes C63 AMG Black Series Coupe
      • 16-21 Mercedes C63S
      • 08-09 Mercedes CLK63 AMG Black Series Coupe
    • 07-18 CLS AMG w/Iron Discs
    • 07-16 E63 AMG w/Iron Discs
    • 15-16 G63 AMG
    • 13-16 GL63 AMG
    • 16 GLE450 w/390mm FD
    • 16-19 GLE 63 AMG w/Brembo Front Calipers
    • 12-15 ML63 AMG
    • 2016 Maybach S600 (Exc. Armor)
    • 06-08 SL55 AMG w/6 Piston FC
    • 09-19 SL63 AMG
    • 09-11 SL65 Signature & Black Series
    • 13-17 SL65 AMG w/Iron Discs
    • 11-15 SLS w/Iron Discs
    • 15-16 S600
    • 15-16 S600 Armored
    • 15-17 S65 AMG w/Iron Discs
    • 15-19 S63 AMG w/Iron Discs

Note: Be sure to install these pads on new, or rotors in good condition. Life will decrease if installed on grooved rotors or rotors with a visible outer lip.

Note: There is no warranty stated or implied on Porterfield pads due to the unusual stress placed on racing parts and because we have no control how they are used.

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