Porterfield R4-1 Carbon Kevlar Racing Brake Pad GD 522 R4-1

Porterfield Carbon Kevlar R4-1 Racing Brake Pad:  GD 522 R4-1 

Porterfield R4-1 Carbon Kevlar Racing Brake Pads were developed and tested in the Vintage Racing community. Because of the high coeffecient of friction (?) at low temperatures, these are fast becoming the Autocross brake pad of choice. A peak ? of .600 the R4-1 pad can reach close to ? of .500 at temperatures as low as 200?F. The R4-1 brake pads are widely used on Vintage GT and Formula car where pad temps are under 600?F and peak temps are below 1,000?F. This is also a good Rally-Cross brake pad.

Typical GD 522 R4-1 applications are the AC Cobra, Alfa Romeo 1600 and 2600. Aston Martin DB5, DB6, DBS, Lagonda, Vantage and Volante. Ferrari 206, 275, 330, 365. Fiat 1600 and Dino 2000. Jaguar 420, XJ12, XJ6 and XKE. Lotus Esprit. Mercedes Benz 200, 220, 230, 250, 300SE, 300SEL and 300SL. Volvo 122, 130 Series, 1800 and 220 Series.