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Product details
The Fabspeed Secondary Muffler Bypass Pipe replaces the right-rear secondary silencer on the 1990–1994 Porsche 964 Turbo / 965. Exhaust still passes through the catalytic converter before reaching the bypass and tailpipe, distinguishing this part from a catalyst-delete pipe. Based in Fort Washington, Pennsylvania, Fabspeed Motorsport designs exhaust systems, air intakes and ECU tuning for sports cars including Porsche, with development informed by dyno testing and road and track evaluation.
Technical Details
- Manufacturer part number: FS.POR.964T.SMB
- 14–16-gauge mandrel-bent T304L stainless steel.
- Replaces the original secondary muffler.
- Manufacturer-listed weight reduction of 25 lb / 11.4 kg.
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Fitment & Compatibility
| Years | Make | Model / chassis | Version / application | Fitment notes |
|---|---|---|---|---|
| 1990-1994 | Porsche | 911 (964 Turbo / 965) | 3.3L / 3.6L Turbo | Retain catalytic converter and match right-rear outlet arrangement. |
Listed for 3.3-liter and 3.6-liter 964 Turbo / 965 cars from 1990–1994. Confirm that the catalytic converter remains installed and that the right-rear tip arrangement matches the bypass. Expect a stronger exhaust and turbocharger note than the stock silencer.
For help checking your Porsche configuration, contact PMB Performance with the VIN and installed equipment. Our team brings more than 20 years of Porsche parts experience.
