Good-Win Racing Mazda Performance Parts

Porterfield R4-1 - Racing Brake D647 Pad Shape

2006-2015 · R4-1 for Racing Brake D647 Pad Shape

Autocross/Track

Miata MX5 2006-2015 · Brakes · Brake Kits and Complete Packages


Part Number: 61-2096

Year: 2006-2015

Application: R4-1 for Racing Brake D647 Pad Shape

Price: $156.00

Quantity:

Porterfield R4-1 - Racing Brake D647 Pad Shape
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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 200 F . This means you can drive it to/from the track and it will bite on the street when the pads are cold.

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 600 F and peak temperatures are not over 1000 F. 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 Porterfield carbon kevlar compounds.

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