Porterfield R4-1 Carbon Kevlar Racing Brake Pad AP 396 R4-1

Porterfield Carbon Kevlar R4-1 Racing Brake Pad:  AP 396 R4-1 

Porterfield R4-1 Carbon Kevlar Racing Brake Pads were developed and tested in the Vintage Racing community. Because of the high coefficient 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 AP 396 R4-1 applications are BMW E28 M5, E30 M3, E32 735i, 730i, 735iL, 740i, 740iL and 750iL. E34 525i, 525iT, 530i, 535i and 540i. E36 318i, 318iS, 325iX, 325i, 325is, 323i, 323iS, 328i, 318Ti, 328iS and M3. E39 530i and 540i. E46 320i, 323Ci, 325Ci, 325i, 325Xi and 328Ci. E85/E86 Z4. Z3, Z3 M roadster..