Good-Win Racing Mazda Performance Parts

Porterfield R4S -STREET Rear

2016-2017

Performance Street/Autocross

Miata MX5 2016-2017 · Brakes · Pads


Part Number: 61-0334ND

Application: 2016-2017

Price: $99.00

Quantity:

Porterfield R4S -STREET Rear
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The "S" is for street. These are an old favorite of ours. They work great for street/autocross and light track duty. They dust a bit but the performance is consistent from street temps to about 500 degrees. For more serious race duty try the Porterfield R4.
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REVIEWS

Wanted to say thanks. The exhaust system fit perfectly, no drone at steady throttle, but a nice sound winding thru the gears. And it does sound a lot like my old Alfa. The Racing Beat lowering springs are just right. Appreciate the tech advice and the service.

-- Todd

Hey Brian, Recieved my Borla Dual Muffler Sport today from Fedex, and installed it in about 30-45 minutes. An Outstanding product with absolutely no drone throughout the power band, it sounds powerful, not at all like one of the ricey "fart tubes" that can be found elsewhere online. It has perfect like OEM fitment. Great prices, and great products. Product was shipped promptly and arrived as ordered. Would buy again!

-- Jake