Porterfield makes A uniquely engineered composite brake pad, which exceeds the
proficiency of any other racing pad. This precision desi gn 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.Carbon Kevlar pads are very rotor friendly.
What makes Carbon Kevlar different from others? Carbon Kevlar pads are different because
they are rotor friendly, work well hot or cold, have very high friction level and exhibit
no fade, and on some compounds offer little to no dust or squeal.
Cross drilling of Rotors is designed for use on high Performance vehicles. They are
also extremely effective for practical street applications. Cross Drilling assists
cooling of rotor and also lets gas build-up between pad and Rotor escape. Using these
Rotors may actually enhance braking in wet conditions.
For more information on Portfield, visit their website at Portfield