Porterfield Racing Brakepads

A uniquely engineered composite brake pad, which exceeds the proficiency of any other racing pad. This precision design combines Kevlar, Carbon and an array of other high performance materials to make a better brake pad. R-4 Carbon Kevlar is a high friction material with a .485 friction coefficient designed especially for heavy duty motorsports. R-4 Carbon Kevlar pads have a unique ceramic heat shield integrally molded and designed specifically for high temperature applications to minimize heat transfer.

R-4 Carbon Kevlar
Ten years old and still an outstanding race pad, the original R-4 Carbon Kevlar has proven to be versatile and a superior performing product. We have added two new compounds to compliment the R-4.

R-4 S: Street High-performance & Limited Competition
The high performance street pad of choice. Very high friction level even at cold temperatures. No dust or squeal.

R-4 E: Endurance Racing Pads with Longer Life
This endurance pad, with special formulation for long races, runs cool and wears longer than our regular R-4. Great for extended time events.

E30 M3 Brembo Package