Porterfield R4-1 Carbon Kevlar Racing Brake Pad DD 704 R4-1

Porterfield Carbon Kevlar R4-1 Racing Brake Pad:  DD 704 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 DD 704 R4-1 applications are Alfa Romeo TZ front and rear. Ferrari 250 GT, 275 LM, 275 GTB, 275 GTS and 330 GT. Jaguar 340, Mark IX, MK I, MK II, MK X, XK 150 and XKE Series 1. Mercedes Benz 300SL front and rear. (W108) 300SE, 300SEc. (W112) 300SE. MG MGA. Nissan 411 1300. Toyota Crown..