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Porterfield Racing Brake Pads — Race Proven Performance
Porterfield AP1898
Image of what an axle set is. 2 pads per wheel, 2 wheels equal axle set

Porterfield Part # AP1898 R-4

Porterfield AP1898 Brake Pads

$384.95 CAD
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Canadian since 2005Mississauga, Ontario
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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-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 AP1898 brake pad Axle set of 4 pieces REAR

Make Vehicle Applications
Audi 17-20 A4 Allroad, 17-20 A4 FWD, 17-19 A4 Quattro, 18-20 A5 Sportback, 18-19 A5, A5 Quattro, 19-20 A6 Quattro, 19-20 A7 Sportback, 18-20 Q5, 2020 Q5 Hybrid, 18-19 RS5, 2019 RS5 Sportback, 18-20 S4, 19-20 S5, 18-20 S5 Sportback, 18-20 SQ5 D1898, AP1898, HB866.652

Cross-Reference Part Numbers: D1898, AP1898, HB866, 652

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

Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may have a handling fee depending on your location; pickup in Mississauga has no fee.

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