Porterfield R4 Track Competition Pad Tesla Model 3 Performance

R-4 Racing Compound

For over two decades, the Porterfield Carbon Kevlar brake pad has

given racers abroad a definite world class friction material suitable for

virtually any racing condition. Designed specifically for heavy duty

motorsports, the Porterfield R-4 brake pad was our first and is our origi-

nal Carbon Kevlar brake pad. Being able to maintain an average of 0.50

friction level and high of 0.54 within a very wide temperature range gives the R-4 pad

astounding versatility and makes it very suitable for a wide array of vari-

ous track conditions.

With use of the latest ceramic technology, the Carbon based semi-

metallic R-4 materials allow the pads to absorb tremendous amounts of

heat and dissipate it at a very even rate, while at the same time insulating excessive heat from calipers. Another

inherent characteristic of our carbon kevlar material is how quickly the pads warm up to race temperature which

is quite helpful during restarts, and when track time is limited.

Optimum R-4 operating temperatures are 450ºF and above. When used with cast iron and steel alloy

rotors, the R-4 compound requires minimal bed-in period. Throughout the entire heat range, the Carbon Kevlar

material will give extremely consistent modulation and

predictability smooth release characteristics up to thresh-

old. Another benefit of our R-4 compound is that even

with the high friction levels and broad temperature

ranges, the unique properties of our compound allows

the rotors life to be extended to the maximum. This is

truly the most rotor friendly racing brake pad material

ever. Road courses, oval track, rally, vintage racing,

autocross, club events or professional racing events.

Tested and raced in countless types of competition ve-

hicles, the R-4 compoun

AP2399

AP2387

Application:

Tesla Model 3 Performance