All Silencers / Mufflers

Fabspeed's Muffler Bypass Pipes for the Porsche 996 GT3 replace the heavy and restrictive factory muffler assembly saving 50 lbs from the rear of the car.

Lighten the rear of the vehicle while adding aggressive Supercup-style sound by replacing the heavy factory mufflers with straight-through tubes.

FEATURES:

• Fits all Porsche 996 GT3 vehicles (1999-2005)
• Increases horsepower and torque by 11 whp and 7 ft-lbs for improved throttle response
• Saves 50lbs from the rear of the vehicle
• Used by many Rolex Grand Am race teams as well as PCA/POC and HPDE drivers
• Simple DIY bolt-on installation; no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

Replacement Rear sport exhaust set. Polished stainless steel. With TÜV/EEC approval.

Fits:
Porsche 996 GT3 3.6L 1998-05

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99622096300SGT3

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Exhaust Muffler / Silencer Sports SUPREMACY. DesignTek for Porsche 996

Sound = Much deeper than the factory standard exhaust but not too loud   (SET OF 2 Left & Right)

Made in the UK
 

Fits:
Porsche 996 C2, C4, C2S, C4S 1997-2004
Porsche 996 GT3

This sports exhaust set conveys the sound of power, presence and natural sporting presence the 911 needs. Built with a large diameter chamber bypass pipe the engine note changes with more aggressive throttle.

DesignTek Sports SUPREMACY system exhaust made from High Grade stainless steel.

Made from 14 - 16 gauge T304SS, polished mirror finish, Giving a good really feel, superb super sound, Designed to give an open throttle sound and more aggressive at medium and high speeds.

We also have a wide selection of s/steel tail pipes. 

NOTE: This exhaust system must be used with Genuine Porsche tailpipe clamps. Due to dimensional differences, aftermarket tailpipe clamps may not be compatible. You will be prompted to add the correct clamps when adding this exhaust to your basket.



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3606009611

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DesignTek Exhaust Muffler / Silencer Sports VALVETRONIC  (SET OF 2 Left & Right)

Fits:
Porsche 996 C2, C4, C2S, C4S 1997-2004
Porsche 996 GT3

DesignTek Valvetronic sports exhaust 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. The pipes coming off the rear box is made from SUS409. This Exhaust is around 95dbs +/- with the valves closed and around 102dbs +/- open and sounds much throatier.

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 and will work with the stock catalytic converters or any aftermarket sport cats designed to fit with OEM exhaust systems

Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed. You can reuse your factory OEM Porsche tips or you can opt for DesignTek tail pipes

Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025

Installation instructions for Valvetronic Mufflers CLICK HERE

For Wiring Diagram please CLICK HERE



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3606009614

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The ultimate Sports Exhaust system for the Porsche GT3 inc RS & CS
QuickSilver were approached by a well known specialist in racing and track-day Porsche, to develop a complete SUPERCUP exhaust system for enthusiast customers.

KEY FEATURES:
• More Power +20bhp
• Less Weight - to lose over 20kgs (~44lbs) from the rear of the car.
• Ease of fit & no loss of ground clearance > All in a compact volume.
• Great Sound - but to enable compliance with most track-day venues - A tall order!
• Motorsports Look.
• Appropriate Sound - about 105dB > but reduced further with removable Titanium cans.

An ambitious project, requiring new materials technology, manufacturing methods, component integration and constant testing.

The factory exhaust includes five muffler casings, 2 x Cats, 2 x side mufflers and 1 x rear muffler. QuickSilver's brief was to distil these into 1 x casing & similar to the system produced by Porsche's Motorsport Dept for their international one-make racing series.

Drawing their constant racing experience our partners were able to provide technical input and testing facilities.

Throughout the development period the system was evaluated both at our partner's in-house test facilities and on the track. Each time refinements were included in the overall design to create a fantastic system worthy of the Porsche name.

QuickSilver system includes:
• Manifolds with equal-lenght primary pipes of the appropriate bore for optimum power.
• Single rear silencer casing housing integral 200 cpsi RACE catalytic converters.
• Provision for fitting of OBD2 exhaust sensors measuring the exhaust gas composition before and after the Cats on both cylinder banks.

Brand: QUICK SILVER

Fits:
Porsche 911 (996) GT3 1998-05

Fabspeed Competition Muffler Outlets W / Adjustable Turndowns.

The Fabspeed Porsche 996 GT3 Competition Muffler Outlets with Adjustable Turndowns are a specialist exhaust upgrade designed to help Porsche 911 GT3 owners manage exhaust noise at track days, racing events and motorsport venues with strict decibel limits.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Developed for Porsche 996 GT3 models manufactured between 1999 and 2005, these competition exhaust outlets replace the factory exhaust tips with adjustable stainless steel turndowns that allow the direction of exhaust discharge to be changed.

The Porsche 996 GT3 features a naturally aspirated 3.6-litre flat-six engine renowned for its high-revving character and distinctive motorsport-inspired exhaust note.

While this sound is an important part of the GT3 driving experience, high-performance exhaust systems can produce noise levels that exceed the limits imposed by certain racing circuits and track-day organisers.

Many motorsport venues use static or drive-by sound monitoring to ensure that vehicles remain within permitted noise levels. Cars exceeding these limits may be refused access to the circuit or required to stop participating.

Fabspeed developed the Competition Muffler Outlets to provide a practical method of redirecting exhaust noise without requiring the driver to replace the complete exhaust system.

The adjustable turndown design allows the exhaust outlets to be rotated, directing gases and sound downwards or towards another suitable angle rather than straight out of the rear of the vehicle.

This change in direction can alter the way exhaust sound reaches external measurement equipment, potentially reducing measured noise at particular monitoring positions.

Manufactured from T304L stainless steel, the competition outlets are designed to withstand the high temperatures and operating conditions associated with performance exhaust systems.

The product uses a bolt-on installation arrangement, with the required clamps and mounting hardware supplied.

No cutting or welding is required when fitting the outlets to the corresponding Porsche 996 GT3 exhaust arrangement.

Unlike a complete replacement silencer, these outlets do not introduce a new muffler or significant additional sound-absorbing material.

Their primary purpose is to redirect exhaust sound, rather than to substantially reduce the total acoustic energy produced by the engine.

They are particularly useful for Porsche owners who want to retain their existing exhaust system while gaining additional flexibility for track events.

What This Product Does:
The Fabspeed Competition Muffler Outlets replace the original rear exhaust tips with adjustable outlets designed to change the direction of exhaust gas discharge.

Their primary functions include:

• Redirect Exhaust Sound: Change the angle at which exhaust noise leaves the rear of the vehicle.
• Support Track Noise Management: Help reduce sound exposure at particular external measurement positions.
• Provide Adjustable Exhaust Direction: Allow the turndown outlets to be rotated to an appropriate position.
• Direct Exhaust Towards the Ground: Enable downward-facing exhaust discharge where suitable.
• Offer Alternative Outlet Angles: Allow the driver or technician to adjust the orientation according to the intended application.
• Support Motorsport Use: Provide additional flexibility for vehicles attending noise-controlled circuits.
• Replace Factory Exhaust Tips: Fit in place of the original exhaust outlet components.
• Maintain Existing Exhaust Hardware: Work with the corresponding exhaust mounting arrangement without requiring a complete exhaust replacement.
• Provide Durable Stainless Steel Construction: Resist corrosion and withstand normal high-temperature exhaust operation.
• Allow Convenient Adjustment: Use accessible clamping connections to enable outlet repositioning.
• Maintain Application-Specific Fitment: Designed for Porsche 996 GT3 models.
• Avoid Permanent Exhaust Modification: Bolt-on installation requires no cutting or welding.

Symptoms Of Wear Or Failure:
The Fabspeed Competition Muffler Outlets are primarily a motorsport accessory and exhaust upgrade rather than a component that requires replacement at a fixed service interval.

However, the factory exhaust tips or existing outlet hardware may become damaged through age, vibration, corrosion, accidental impact or repeated track use.

Common signs that the existing exhaust outlet arrangement requires attention include:

• Exhaust outlets moving when inspected.
• Metallic rattling from the rear of the vehicle.
• Unevenly positioned exhaust tips.
• Loose mounting clamps.
• Exhaust tips contacting surrounding components.
• Heavy rust around mounting connections.
• Corroded clamps or fasteners.
• Surface deterioration.
• Weak or damaged welds.
• Difficulty removing or adjusting the outlets.
• Visible cracks.
• Deformed or bent outlets.
• Exhaust blowing noises.
• Black soot around damaged connections.
• Unusual vibration from the tailpipe area.

Why Replacement Matters:
Installing Fabspeed Competition Muffler Outlets provides additional control over exhaust discharge direction, making them particularly valuable for Porsche 996 GT3 owners who regularly attend motorsport events.

• Improved Track Noise Management: Adjustable outlet angles may help reduce measured exhaust noise at certain monitoring positions.
• Greater Exhaust Direction Control: Allows the exhaust discharge to be aimed downwards or in another appropriate direction.
• Potentially Wider Track-Day Usability: May help vehicles approach the permitted noise level for certain venues.
• Maintains the Existing Exhaust System: Avoids replacing the entire exhaust solely to change outlet direction.
• Quick Adjustment: Rotatable outlets can be repositioned using their clamp connections.
• High-Quality Stainless Steel: Manufactured from corrosion-resistant T304L stainless steel.
• Motorsport-Focused Design: Developed with noise-controlled performance driving in mind.
• Direct Bolt-On Installation: No permanent cutting or welding required.
• Included Mounting Hardware: Supplied with the required clamps and installation components.
• Maintains Porsche GT3 Character: Retains the existing exhaust system's general sound characteristics while changing their direction.
• Useful for Track-Focused Vehicles: Provides additional flexibility for vehicles used at different circuits.
• Cost-Effective Exhaust Adaptation: Offers an alternative to fitting a different complete exhaust system where outlet redirection is appropriate.
• Fabspeed Motorsport Engineering: Produced by a specialist in performance exhaust systems.
• Lifetime Warranty: Covered by the manufacturer's stated warranty terms.

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FSPOR996GT3CMO

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Fabspeed Maxflo Performance Exhaust System.

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FSPOR996GT3MAX

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Fabspeed Supercup Exhaust System.
The Fabspeed Porsche 996 GT3 Supercup Exhaust System is a lightweight, straight-through performance exhaust designed for drivers seeking maximum exhaust flow, reduced backpressure and an extremely aggressive motorsport-inspired sound from the naturally aspirated 996 GT3 flat-six.

Fits:

• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>  

Developed with track use in mind, the Supercup system replaces the more restrictive factory rear exhaust arrangement with freer-flowing 2.25-inch CNC mandrel-bent T304L stainless-steel tubing. The straight-through configuration dramatically reduces restriction while allowing the distinctive GT3 flat-six exhaust note to become considerably more pronounced.

Fabspeed reports gains of approximately +20 HP and +17 lb-ft of torque, together with an approximate 10 lb reduction in weight. Actual results will depend on the individual vehicle, exhaust configuration and operating conditions.

What This Product Does:
The exhaust system carries combustion gases away from the engine while influencing exhaust restriction, engine breathing, sound and overall performance.

The factory system must balance performance with road-car requirements for noise, refinement and comfort.

The Fabspeed Supercup system takes a much more performance-focused approach.

Its straight-through design is intended to:

• Dramatically reduce exhaust backpressure
• Improve exhaust-gas flow
• Improve engine breathing
• Increase horsepower and torque potential
• Reduce exhaust-system weight
• Produce a significantly louder exhaust note
• Emphasise the naturally aspirated flat-six sound
• Provide a more motorsport-oriented driving experience

Straight Through Supercup Design:

• The defining feature of this system is its straight-through exhaust configuration.
• Rather than prioritising maximum sound suppression, the Supercup system provides a freer route for exhaust gases leaving the engine.
• Reduced restriction can help exhaust gases leave the engine more efficiently, particularly at higher engine speeds where gas volume increases substantially.
• This makes the system particularly appropriate for performance and track-focused 996 GT3 applications.

Manufacturer Reported Performance:
Fabspeed lists performance figures of approximately:

Power: +20 HP
Torque: +17 lb-ft
Weight Reduction: Approx. 10 lb

These figures are manufacturer-reported and should not be considered guaranteed gains for every vehicle.

Actual performance can vary according to:

• Engine condition
• Existing exhaust configuration
• Catalytic converter configuration
• Intake modifications
• Engine calibration
• Fuel quality
• Ambient conditions
• Vehicle specification
• Testing equipment and procedure

Why Upgrading Matters:
The factory exhaust does not need to be worn or faulty for this system to be installed.

The Supercup is primarily a performance and motorsport-style upgrade.

Reasons for upgrading include:

• Dramatically reduced exhaust backpressure
• Improved exhaust flow
• Straight-through performance design
• Manufacturer-reported +20 HP
• Manufacturer-reported +17 lb-ft
• Approx. 10 lb weight reduction
• Extremely aggressive GT3 exhaust sound
• Enhanced high-RPM flat-six character
• 2.25-inch mandrel-bent tubing
• T304L stainless-steel construction
• Compatibility with several catalyst configurations
• Bolt-on installation
• No cutting or welding required

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FSPOR996GT3SCUP

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