Porterfield R4-1 Carbon Kevlar Racing Brake Pad AP 984 R4-1

Porterfield Carbon Kevlar R4-1 Racing Brake Pad:  AP 984 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 984 R4-1 applications are Mercedes Benz (R171) SLK55 AMG. (R230) SL55 AMG, SL350, SL600 and SL65 AMG. (W209) CLK63 AMG and CLK55 AMG. (W211) E55 AMG. (W215) CL55 AMG, CL65 AMG and CL600 Twin Turbo. (W219) CLS55 AMG. (W220) S55 AMG, S600, S65 AMG and SL63 AMG. SLR McLaren rear brakes..