Porterfield R4-1 Carbon Kevlar Racing Brake Pad AP 603 R4-1

Porterfield Carbon Kevlar R4-1 Racing Brake Pad:  AP 603 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 AP 603 R4-1 applications are Chrysler Crossfire SRT-6. Mercedes Benz (C140) 500SEC and 500SEL. (R129) SL320, 600SL, SL500 and SL600. (R170) SLK32 AMG. (R171) SLK55 AMG. (W124) E320. (W140) 300SD, 300SE, 400SE, 400SEL, 600SEC, 600SEL, CL500, CL600, S320, S350, S350D, S420, S500 and S600. (W202) C36 AMG and C43 AMG. (W203) C32 AMG and C55 AMG. (W208) CLK55 AMG, CLK320, CLK430 and E300D. (W209) CLK55 AMG, CLK500 and CLK550. (W210) E430, E420, E55 AMG and E320..