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- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
The Fabspeed Porsche 964 Carrera Secondary Muffler Bypass Pipe is a performance exhaust upgrade designed to improve exhaust flow, reduce rear-end weight and deliver a more aggressive air-cooled flat-six exhaust note on Porsche 911 Carrera (964) models manufactured between 1989 and 1994.
Fits:
- Porsche 964 (911) C2 1989-94
- Porsche 964 (911) C4 1989-94
- Porsche 964 (911) RS 3.6L 1991-94
- Porsche 964 (911) RS 3.8L 1991-94
Developed as a replacement for the original right-hand secondary muffler, this straight-through exhaust pipe eliminates the bulky factory silencer and provides a more direct route for exhaust gases to exit the vehicle.
The Porsche 964 Carrera is powered by an air-cooled flat-six engine renowned for its distinctive mechanical character and engaging driving experience. However, its original exhaust system was designed to balance engine performance with noise reduction and everyday refinement.
The factory secondary muffler plays an important role in reducing exhaust sound before the gases exit through the rear tailpipe. While effective at controlling noise, its internal silencing arrangement also adds weight and may contribute to exhaust flow restriction.
Fabspeed developed this bypass pipe as a lightweight alternative inspired by the exhaust arrangements used on Porsche Motorsport's 964 Carrera Cup racing cars.
Manufactured from high-quality T304L stainless steel, the pipe features a full 3-inch (76 mm) diameter, CNC mandrel-bent construction and precisely TIG-welded joints.
The straight-through configuration reduces the restriction associated with the factory secondary muffler, allowing the engine's exhaust note to become more prominent.
Replacing the heavy original right-hand muffler also removes weight from the rear corner of the vehicle, potentially benefiting weight distribution and reducing the mass carried behind the rear axle.
Fabspeed advertises a weight saving of approximately 25 lbs (11.4 kg), although its product specifications also contain a different weight figure. The precise saving should therefore be confirmed for the vehicle and component configuration.
The bypass pipe is designed to work with compatible Porsche 964-style original equipment rear exhaust arrangements and retains the existing catalytic converter where fitted.
What This Product Does:
The Fabspeed Secondary Muffler Bypass Pipe replaces the original right-hand rear silencer with a straight-through stainless steel exhaust section.
Its primary functions include:
- Bypasses the Factory Secondary Muffler: Eliminates the original right-hand rear silencer from the exhaust path.
- Improves Exhaust Flow: Provides a less restrictive route for exhaust gases through the rear exhaust section.
- Enhances Exhaust Sound: Produces a louder, sportier air-cooled flat-six exhaust note.
- Reduces Rear-End Weight: Removes the mass of the factory secondary muffler from the right-hand rear corner.
- Supports Engine Response: Reduced exhaust restriction may improve throttle response under suitable operating conditions.
- Maintains the Original Catalytic Converter: Replaces a downstream muffler rather than the factory emissions-control catalyst.
- Preserves Compatible Factory Connections: Uses the corresponding original Porsche mounting and sealing arrangement.
- Accommodates Original Exhaust Tips: Allows the factory right-hand tailpipe outlet to be retained.
- Supports Motorsport-Inspired Builds: Recreates the general concept of a Porsche Carrera Cup-style rear muffler bypass.
- Provides Durable Stainless Steel Construction: T304L stainless steel helps resist corrosion and prolonged exhaust heat exposure.
- Maintains Smooth Pipe Geometry: CNC mandrel bending helps preserve internal pipe diameter through bends.
- Allows Reversible Modification: The factory secondary muffler can be refitted if the original components and mounting hardware remain available.
Symptoms Of Wear Or Failure:
The Fabspeed Secondary Muffler Bypass Pipe is primarily a performance upgrade rather than a component that requires replacement at a fixed service interval.
However, a damaged or deteriorating factory secondary muffler may need repair or replacement.
Typical symptoms:
- Ticking, hissing or blowing noises.
- Unusual increases in exhaust volume.
- Black soot deposits around pipe connections.
- Exhaust odours around the rear of the vehicle.
- Noise that becomes more noticeable under acceleration.
- Heavy corrosion on the muffler housing.
- Rust around welded seams.
- Perforations or holes.
- Flaking or weakened metal.
- Damaged exhaust connection surfaces.
Why Replacement / Upgrading Matters:
The Fabspeed Secondary Muffler Bypass Pipe offers a practical performance upgrade for Porsche 964 Carrera owners seeking reduced exhaust weight, less restrictive gas flow and a stronger flat-six soundtrack.
- Reduced Rear Weight: Replaces the heavy factory secondary muffler with lighter stainless steel pipework.
- More Aggressive Exhaust Sound: Enhances the character of the air-cooled Porsche engine.
- Improved Exhaust Flow: Removes the internal restrictions of the right-hand secondary silencer.
- Potentially Better Throttle Response: Reduced exhaust restriction may support quicker engine response.
- Motorsport-Inspired Design: Based on the secondary muffler bypass concept used on Porsche 964 Carrera Cup cars.
- 3-Inch Exhaust Diameter: Provides a direct-flow exhaust passage.
- T304L Stainless Steel: Offers corrosion resistance and high-temperature durability.
- CNC Mandrel-Bent Construction: Maintains consistent internal pipe dimensions.
- TIG-Welded Connections: Provides durable welded joints.
- Compatible with Factory Hardware: Reuses original Porsche clamps and sealing rings.
- Factory Tailpipe Compatibility: Allows the original right-hand exhaust tip to be retained.
- Optional Fabspeed Outlet Tip: Can be paired with a compatible 4.5-inch oval tip.
- Retains Catalytic Converter: Does not remove the factory catalyst when installed on the specified exhaust system.
- Reversible Installation: Allows refitting of the original secondary muffler.
- Fabspeed Lifetime Warranty: Covered by the manufacturer's stated warranty conditions.
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FSPOR964SMB
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- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
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- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
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- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
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- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
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- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Fits:
All Porsche models with vacuum operated valvetronic exhaust systems
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- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
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Includes 200 Cell Sport Cat (Without OPF/GPF)
Note: For vehicles fitted with OPF/GPF from factory, remapping the ECU is mandatory
Fits:
Porsche Boxster 982 (718)
Porsche Cayman 982 (718)
This system comes complete with Matt Carbon Fibre Tail pipes.
Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.
This unique exhaust configures a dual-tone setup controlled by a key fob which you can switch on the fly. Direct replacement for the factory mufflers.
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Sound
Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed.
Please note the remote controls do not come with batteries. You will have to source them at your own cost. The type is CR2025
We suggest buying and fitting lambda oxygen extension in case the engine check light comes on. Please add to basket product code 00060612302.
For Wiring Diagram please CLICK HERE
NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.
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3606007180
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Fits:
Porsche 718 Boxster / Boxster S 2.0T/2.5T
Porsche 718 Cayman / Cayman S 2.0T/2.5T
Multiple options covering every taste, accompanied by unmatched quality, fitment, performance, and a tailored AWE Tuning soundtrack. This is the finest 718 exhaust suite available.
• Max gains of 9.5 hp @ 7200 rpm and 6 ft-lbs of torque starting @ 4370 rpm at the crank
• Available as:
→ valved SwitchPath™ (retains factory PSE button operation),
→ refined Touring Edition, or
→ more unleashed Track Edition
• 102mm double-walled tips available in:
→ Chrome Silver
→ Diamond Black
→ 96mm stainless steel tips with carbon fiber sleeve
• 10.5 lb weight savings over stock with complete Track Edition, 6.5 lb savings with Touring Edition, and 2.5 lb savings with SwitchPath™
• Does not interfere with factory emissions equipment
• Less is more: clean, straight-through design maximizes performance
• Engineered, designed, and manufactured in-house at AWE Tuning
• Handcrafted from U.S.-sourced CNC mandrel-bent 0.65" wall T304 stainless steel
• Direct bolt-on system for factory-like simplicity and easy installation
• No Check Engine Light - Guaranteed
• Perfect Fitment - Guaranteed
• Featuring the AWE Tuning Lifetime Exhaust Warranty
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