Porterfield R4-1 AP1368 Brake Pad Rear Mitsubishi Evolution X

This high friction racing material has grown to be a
very popular choice for drivers who need the highest possible
friction with a low pad temperature. Developed and tested in
the vintage racing community the R4-1 gives an average coefficient of friction of .56 with peak levels up to .600. Having
tremendous stopping power, the R4-1 pad material can reach
upwards of .5 friction level when pad temperature is a very
low 200ºF . Drivers can still have a high friction brake pad
without worry of the pad becoming too cold to be effective
when the car is driven only moderately. For use when pad
temperatures are under 600ºF and peak temperatures are not over 1000ºF. Widely used on Vintage GT
and formula cars the R4-1 has gained great popularity as an excellent auto-cross, off-road and rally-cross
pad material. Great modulation, consistent pedal feedback and the same rotor friendliness as our other
carbon kevlar compounds.