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Porterfield Racing Brake Pads — Race Proven Performance
Porterfield AP603
Image of what an axle set is. 2 pads per wheel, 2 wheels equal axle set

Porterfield

Porterfield AP603 Brake Pads

SKU: SKU: AP603 R-4

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Porterfield Brakes are race-bred friction designed and proven on the track. Each set is precision-cut from premium friction material and developed for high-temperature durability, fade resistance, and consistent pedal feel.

Available Compound Options for this Fitment:

  • R-4 — The original road racing compound that is very rotor friendly and easy to modulate. Medium friction with a 0–1200°F temperature range; optimum 350°F–900°F. Not for street use.
  • R4-E — The Endurance compound. Slightly lower friction than the R-4 but designed to wear longer for endurance races (4–6 hour). Characteristics are otherwise much the same as R-4. Not for street use.
  • R4-S — The performance street pad. Lowest dust and squeal of any street pad in the Porterfield line, very rotor friendly, and lasts as long as (or slightly longer than) stock pads. Not for track use. Not for use with CCM discs.

Vehicle Fitment

Porterfield AP603 brake pad Axle Set of 4 Pieces REAR

Make Vehicle Applications
Chrysler 05-06 Crossfire SRT-6
Mercedes-Benz BENZ: 92-93 300SD, 92-93 300SE, 92 400SE, 93 400SEL, 93 500SEC, 92-93 500SEL, 93 600SEC, 92-93 600SEL, 93 600SL, 02-04 C32 AMG, 06-07 C350 AMG, 98-00 C43 AMG, 05-06 C55 AMG, 98-99 CL500, 98-99 CL600, 98-99 CLK320, 03-04 CLK55 AMG, 03 CLK430, 03-06 CLK500, 01-04 CLK55 AMG. 07-09 CLK550, 98-99 E300 2pin, 94-03 E320 2pin, 97-99 E420, 00-02 E430, 94-99 S320, 94-95 S350, 94-99 S420, 94-99 S500, 94-99 S600, 96-97 SL320, 96-98 SL500, 94-02 SL600, 02-04 SLK32 AMG, 06-08 SLK55 AMG D603, AP603, HB371.600

Cross-Reference Part Numbers: D603, AP603, HB371, 600

All Porterfield Brakes products carry the manufacturer's standard warranty. Race compounds are not for street use.

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