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Porterfield Racing Brake Pads — Race Proven Performance
Porterfield AP785
Image of what an axle set is. 2 pads per wheel, 2 wheels equal axle set

Porterfield Part # AP785 R-4

Porterfield AP785 Brake Pads

$431.95 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.
  • R4-1 — The Vintage compound. Designed for vehicles that struggle to keep heat in the pads. Best when temps are under 600°F and peak temps stay below 1000°F. Also popular as an autocross pad. 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 AP785 brake pad Axle Set of 4 Pieces FRONT

Make Vehicle Applications
Cadillac 02-06 Escalade, 03-06 Escalade ESV, 02-06 Escalade EXT
Chevrolet 03-05 Astro, 02-06 Avalanche 1500, 99-07 Silverado 1500, 00-06 Suburban 1500, 00-06 Tahoe
GMC 03-05 Safari, 99-07 Sierra 1500 2WD, 99-07 Sierra 1500 4wd/AWD, 00-06 Yukon, 00-06 Yukon XL 1500 REAR for CHEVROLET: 02-06 Avalanche 2500, 01-07 Silverado 1500 HD, 99-04 Silverado 2500, 01-10 Silverado 2500HD, 04-06 Silverado 3500, 07-10 Silverado 3500HD, 00-13 Suburban 2500
GMC 01-07 Sierra 2WD HD, 01-07 Sierra 1500 4WD HD, 99-04 Sierra 2600 2WD, 01-10 Sierra 2500 2WD HD, 99-04 Sierra 2500 4WD, 01-10 Sierra 2500 4WD HD, 06-08 Sierra 3500 2WD SRW, 07-10 Sierra 3500 2WD HD SRW, 06-08 Sierra 3500 4WD SRW, 07-10 Sierra 3500 4WD HD SRW, 03-13 Yukon XL2500
Hummer 03-09 H2 D785, AP785, PFC 0785, HB323.724

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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