Audi A4 Quattro - R4-1 - Porterfield Brake Pad - AP340T

R4-1 Vintage Full Race Compound – Developed using knowledge testing in the vintage racing community.  Optimumuses for the R4-1, under conditions where very high friction is neededwith minimal warm up time and in applications where there is difficultyin maintaining sufficient heat with conventional race pad compounds.  Widely used on vintage GT and formula cars the R4-1 is also gaining popularity in off-road and rally-cross classes.  Greatmodulation, consistent pedal feedback and rotor friendly at alltemperatures as with all the other Porterfield Carbon Kevlar compounds.