Porterfield R4-1 Carbon Kevlar Racing Brake Pad AP 31 R4-1

Porterfield Carbon Kevlar R4-1 Racing Brake Pad:  AP 31 R4-1 

Porterfield R4-1 Carbon Kevlar Racing Brake Pads were developed and tested in the Vintage Racing community. Because of the high coeffecant 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 31 R4-1 applications are Alfa Romeo 1600, Alfetta, GTC, GTV, GTZ, Guilia, Sport, Sprint and TZ. Audi 100 and Super 90. BMW 1500, 1600, 1602, 1800, 2002 1600Ti and 1800Ti. Ferrari 208 Turbo, 246 Dino GT, 246 Dino GTS, 308 GT4, 308 GTB, 308GTBi, 308 GTSi, 308 GTS and Mondial. Lamborghini Countach and Jalpa. Maserati 228, Biturbo and Biturbo Zagato Spyder. Mercedes Benz (W114) 230, 250m 250C, 280, 280C. (C126) 380SEC, 500SEC, 500SEL and 560SEC, (R107) 350SL, 350SLCm 380SL, 380SLC, 450SL, 450SLC, 500SL and 560SL. (R113) 280SL. (W108) 280S, 280SE, 300SE, 280SEL. (W111) 280SEC. (W115) 240D, 220, 230 and 300D. (W116) 280S, 280SE, 300SD, 450SE and 450SEL. (W123) 300D, 300CD, 300TE, and 240D. (W126) 300SDL, 300SE, 300SEL, 350SD, 350SDL, 380SE, 380SEL, 420SE, 420SEL, 500SE and 560SEL. (W108) 250, Porsche 356, 911 Carrera 2, 912, and 914. Saab 99. VW 411 Type 4 Sedan, 412 Type 4 Wagon, Fastback, Sedan Type 3 and Type 3 Squareback. Volvo 142, 144, 145, 164, 240, 242, 244, 245, 262, 264, 265, 740, 745, 760, 780, 850, 940, 960, C70, S70 and V70..