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Porsche 911 Carrera European Pre-Muffler Cat Bypass Pipe (1976-1989)

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15.00 LBS
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Porsche 911 Carrera European Pre-Muffler Cat Bypass Pipe (1976-1989)


Replaces factory catalytic converters with a straight-thru resonated European design for increased flow, resulting in more horsepower and improved throttle response.


Getting rid of the factory catalytic converter will dramatically increase the volume of your exhaust and release more of that signature air-cooled flat 6 sound. A straight through resonator is incorporated into the design so you won't get any of that rasp associated with straight piped cars.


An excellent way to increase power on your classic 911. On our DynoJet we saw peak curve gains of 21 whp and 17 ft/lbs of tq at 4500 RPM, and maximum power increases 16 whp and 16 ft/lbs of tq.


  • Fits all Porsche 911 SC and Carrera vehicles (1976-1989)
  • Adds 16+ whp and 15+ tq and significantly increases throttle response while saving 8 pounds
  • Improved sports car sound- gutsy european pre-muffler style
  • Includes straight-through resonator with stainless steel wool packing to last
  • Includes O2 sensor bung so the fuel injection system can automatically adjust mixture/idle/part throttle for maximum performance
  • Constructed from mandrel bent T304L stainless steel
  • Simple DIY bolt-on installation, no cutting or welding required

  • All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only, never to be driven on public roads. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

For Instructions on how to install your product please see the PDF below:

911 Carrera Cat Bypass & Sport Cat.pdf

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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