Good-Win Racing Mazda Performance Parts

Porterfield R4-1 - Wilwood 7416 shape

2006-2015 · Wilwood 6 Piston Superlite

Autocross/Track

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


Part Number: 13-1022NC6

Year: 2006-2015

Application: Wilwood 6 Piston Superlite

Price: $146.00

Quantity:

Porterfield R4-1 - Wilwood 7416 shape
rating (0 Ratings)
rating (0 Ratings)

Thank you. You have rated this product.

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.

*** Product images may differ from actual product appearance ***

REVIEWS

First I want to again thank you for working with me on this muffler. I have almost 100 miles on it now, and it has a nice mellow sound. a little Bass, but not too much. A little louder than stock, but not too loud. Plus it is nice inside the car with the top up. I am happy so far I bought this one.

I belong to a local Miata club, and am very active with it. When Spring comes I will tell everyone how much I like the muffler, and how great you are to work with. Maybe I can get some extra business for you.

-- Bill

Wow. That is really fast service on the shift knob. Thnx

-- Scott