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Porsche // 996 (911) (1997-2005) // 996 C4S 3.6L 09/01-2005
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- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Cayman GT4 3.8L 2015-16
Porsche Boxster Cayman owners have requested a conversion kit that allows the installation of a Porsche OEM 991 GT3 center muffler onto their cars. Fabspeed Motorsport listened and designed in CAD and built inhouse a lightweight installation kit that allows any 6 speed Porsche 981 GT4 or Spyder owner to install an OEM GT3 center muffler (A PDK version will also be available once we are able to test fitment). This kit also allows the installation of a Fabspeed 991 GT3 Center Muffler Bypass Pipe or 991 GT3 Center Mini Maxflo Performance Exhaust onto your 981 GT4/Spyder.
The system consists of 2.5" 63.5mm CNC mandrel bent one piece Left and Right side over axle pipes and clamps. Then a set of valved side muffler inlet Y-pipes that retain the factory PSE valved exhaust functionality. The valves are OEM Porsche GT3 HELICAL vacuum-actuated exhaust valves that are imported from the U.K. We use our FLOW Waterjet to cut a CAD designed, lightweight, stainless steel mounting bracket to hold the muffler; hardware for installation is included. This and the Factory Porsche muffler band straps hold everything in place. For tips, you can use the factory 991 GT3 tips or you can order our custom exhaust tip mount with any choice of our signature tips.
SOUND: Enjoy the characteristic sound of a factory Porsche engineered exhaust but with a nice increase in volume! With PSE off (valves closed), the exhaust is still tame and livable in the cabin. However, with PSE on (valves open) hear that flat 6 howl up to redline! The larger over axle pipes that are included also contribute to the overall louder tone.
POWER: The 991 GT3 muffler was designed by Porsche to support 475 HP, because of this it flows a lot better than the 981 GT4 muffler that was only designed for 385 HP. We expect this increase in flow, helped by our larger over axle pipes and muffler inlets, to give a nice HP increase.
FEATURES:
- Fits all 6 speed manual Porsche 981 Cayman GT4 / 981 Boxster Spyder vehicles (2015-2016). A PDK version will also be available once we are able to test fitment
- Choose between your choice of Premium Fabspeed Exhaust Tips or use OEM 991 GT3 Tips.
- CNC Mandrel bent 2.5" 63.5 precision over axle pipes to valvetronic inlet pipes
- Helical Aerospace United Kingdom exhaust valves- same OEM quality valves used on Porsche GT3, GT3RS. Made with Silica carbide.
- Constructed from 14-16ga T304L stainless steel tubing for maximum power and durability
- Direct bolt-on installation; no cutting or welding required
- All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty.
NOTE: OEM GT3 center muffler is NOT included
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR981GT4GT3CK
The product you are viewing cross references to these numbers
- 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
Loud and aggressive performance exhaust system recommended for track use only.
FEATURES:
• Fits all Porsche 996 Carrera vehicles 1998-2004
• Increases horsepower and torque by 8 whp and 16 ft-lbs
• Saves 21 lbs from the rear of the vehicle
• Dramatically reduces backpressure and improves exhaust flow and sportscar sound
• Includes Fabspeed's Deluxe Quad-Style tips available in Polished or Black chrome; or may re-use factory OEM tips
• NOTE: Factory OEM PSE tips are not compatible with the Supercup system
• Direct replacement for the factory mufflers; compatible with the factory OEM cats or Fabspeed's Sportcat or Catbypass X-Pipe
• Complete T304L stainless steel construction; 14-16ga CNC mandrel-bent 2.25" tubing
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
• NOTE: Carrera C4S models must re-use OEM tips.
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.
- 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
Increase power and save weight with a throatier and deeper exhaust note throughout the RPM range; includes Black Chrome or Polished Deluxe Quad-Style Tips
The 996 Carrera Maxflo Performance Exhaust replaces the factory mufflers, improving the exhaust flow and the overall power while providing a deap and throaty sports car sound. This system includes Fabspeed's Deluxe Quad-Style Tips in either Black Chrome or Polished finish, but is also compatible with OEM tips.
FEATURES:
• Fits all Porsche 996 Carrera vehicles 1998-2004
• Increase horsepower and torque by 12 whp and 10 ft-lbs
• Saves 11 lbs versus the factory components
• Includes Fabspeed's Deluxe Quad-Style Tips in Polished or Black Chrome finish; also compatible with OEM tips
• Improves sports car sound and power throughout the RPM range
• Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacements for the restrictive factory mufflers
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
• NOTE: Carrera C4S models must re-use OEM tips.
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.
- Porsche 996 C4S 3.6L 09/01-2005
Note: MUST REUSE FACTORY TIPS
Lighten the rear of the vehicle while adding a very aggressive Super cup style sound by replacing the heavy factory mufflers with straight-through pipes. This modification is used by many Rolex Grand Am race teams as well as PCA/POC and HPDE drivers. If you are looking for a more subtle and daily-drivable upgrade, we recommend checking out the Maxflo Performance Exhaust or the Supercup Exhaust System.
SOUND:
This is a very loud and aggressive exhaust system. If you're looking for maximum sound and performance, you've found it.
POWER:
This is the most free flowing side "muffler" solution you can get. On our dyno we saw 23 whp and 45 ft-lbs, and these are carried throughout the rpm range.
FEATURES:
• Fits all Porsche 996 Carrera 4S (2002-2004)
• Improves horsepower and torque by 23 whp and 45 ft-lbs
• Saves over 35 lbs from the rear of the vehicle
• 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
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.
- Porsche 996 C4S 3.6L 09/01-2005
The Fabspeed Porsche 996 Carrera 4S Deluxe Quad-Style Tips are premium replacement exhaust outlets designed to give the Porsche 996 Carrera 4S a more distinctive quad-exit appearance.
Fits:
- Porsche 996 C4S 3.6L 1999-2004
Manufactured from stainless steel, the tips replace the standard exhaust outlets while retaining the existing muffler system. They are intended for non-Porsche Sport Exhaust (non-PSE) vehicles and can be fitted to compatible factory mufflers or Fabspeed exhaust systems.
Available in Polished Stainless or Satin Black, the Deluxe Quad-Style Tips provide a more aggressive and contemporary rear-end appearance without requiring modification to the bumper or exhaust system.
What This Product Does:
Exhaust tips form the visible final section of the exhaust system.
Their primary functions include:
- Directing exhaust gases away from the rear bumper
- Providing a finished outlet for the exhaust system
- Maintaining correct exhaust outlet positioning
- Protecting the end of the muffler outlet connection
- Enhancing the appearance of the rear of the vehicle
- Allowing the exhaust outlets to be aligned correctly with the bumper openings
The Fabspeed Deluxe Quad-Style Tips replace the standard outlets with a four-outlet appearance, creating a more performance-oriented look.
This product is primarily a styling and exhaust-finishing upgrade. Fabspeed does not publish a horsepower or torque gain specifically for these tips.
Symptoms Of Wear Or Failure:
Exhaust tips are relatively simple components, but they are exposed continuously to heat, moisture, vibration and road contamination.
Common signs of deterioration include:
- Heavy surface corrosion
- Pitting
- Permanent staining
- Excessive carbon deposits
- Heat discolouration
- Peeling or damaged finish
- Dents
- Scratches
- Cracked welds
- Loose mounting connections
- Rattling
- Tips sitting unevenly
- Exhaust outlets contacting the bumper
- Cracks around the inlet or mounting area
- Excessive movement
- Black soot around a leaking connection
Cosmetic deterioration does not always mean the tip is structurally defective, but severe corrosion or damaged mounting points can justify replacement.
Why Replacement Matters:
Replacing damaged exhaust tips helps restore:
- Correct exhaust outlet positioning
- Secure mounting
- Clearance from the rear bumper
- A clean exhaust gas exit path
- Original or upgraded appearance
- Proper alignment between the left and right sides
If a tip becomes severely loose, cracked or corroded, replacement also reduces the risk of the component becoming detached.
Where the original tips remain mechanically sound, fitting the Fabspeed Deluxe Quad-Style Tips is primarily a visual upgrade rather than a repair requirement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR996QDT4
The product you are viewing cross references to these numbers