Description
The Fabspeed Muffler Bypass Pipe is a true muffler delete system for air-cooled Porsche 911 SC and 3.2 Carrera (1976–1989), replacing the heavy OEM “cigar-style” rear muffler with a straight-through design. This results in significant weight reduction, improved exhaust flow, and a raw, race-inspired exhaust note that transforms the driving experience. The included adjustable turndown tip allows you to fine-tune sound direction and perceived volume, making it one of the most aggressive yet simple bolt-on upgrades for classic 911s.
Fitment Notes
- Fits Porsche 911 SC 3.0L and 3.2 Carrera (1976–1989)
- Replaces factory rear muffler (primary muffler delete)
- Compatible with stock or aftermarket catalytic converters / pre-mufflers
- Considered a cat-back modification (emissions unaffected)
Included
- Straight-through muffler bypass pipe assembly
- Adjustable 90° turndown exhaust tip
- Mounting flanges and hardware for bolt-on installation
Product Specs
- Power Gains: ~+10–12 hp / +8–10 lb-ft torque
- Weight Savings: ~18–20 lbs reduction vs OEM muffler
- Construction: Mandrel-bent T304 stainless steel
- System Type: Primary muffler delete
- Installation: Direct bolt-on
Product Features
- Maximum sound increase: Delivers a raw, loud, air-cooled flat-six tone with race-inspired character
- Significant weight reduction: Removes one of the heaviest rear components on classic 911s
- Improved throttle response: Reduced backpressure allows the engine to rev more freely
- Adjustable sound direction: Turndown tip lets you aim exhaust flow to manage volume perception
- Simple install: Direct replacement using factory mounting points
- Track-proven design: Popular choice for vintage track builds and aggressive street setups
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