Porsche 991 /991 GT3/GT3 RS 4.0 Center Muffler Bypass exhaust system We determined the shortcomings of

We determined the shortcomings of the OEM system and made significant improvements to the exhaust flow characteristics

3 total color choices brushed

The difference is this is a true 4

Incredible Power Increases Across the Entire RPM Range

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Porsche 991 /991 GT3/GT3 RS 4.0 Center Muffler Bypass exhaust system We determined the shortcomings ofJust like the 4. 0 Center Muffler Bypass, this is a true replacement part that adds more growl to the flat 6 motor that we love so much. The difference is this is a true 4. 00 exhaust tip. If you are looking for a more race car look with a deeper exhaust note this is for YOU! When hear the sound of the 9K RPM Fly past you and your hair stands on end, the 4. 0 center muffler bypass is for you! Features. Deeper tone than factory Produced by hand by true