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- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
The ULTIMATE OEM style high performance replacement muffler for your GT3
FEATURES:
• Fits all Porsche 991 GT3 / GT3 RS vehicles 2014-2016 worldwide
• Constructed from CNC cut T304L stainless steel
• Designed from 3D scans of the OEM muffler so we can achieve perfect bolt-on fitment
• Will not break or crack like OEM GT3 mufflers do
• Incorporates our signature cast X-pipe for superior flow and exhaust scavenging
• Paired with our Side Muffler Bypass Pipes this muffler adds +27 ft/lbs of TQ and +16 WHP or +18 HP at the crank!
• 4 different tip options available
• Completely retains PSE valved exhaust functionality
• No Check Engine Light guaranteed
• This cat-back system is emissions legal in all 50 states and the rest of the world
• Built in house at Fabspeed Motorsport USA in Fort Washington, PA
• Simple bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
As many GT3 owners know, the OEM mufflers are prone to cracking, breaking and blowing out, particularly the titanium mufflers on GT3RS cars. We wanted to design a muffler replacement that not only fixed that issue but also improved on the OEM design. Using our 25+ years of air and water-cooled experience, we took the valve open tubing to 2.75in / 70mm which is the optimal diameter for GT3 engines to have low restriction but maintain high velocity and high GT3 pitch for the signature GT3 CUP car sound. Then, we implemented our signature investment cast X-Pipe for optimal exhaust scavenging. The X merges the two cylinder banks without creating any restriction in exhaust flow. To maintain the factory muffler’s exhaust note and lack of drone, we mimicked Porsche’s 7 chamber design. This makes for a completely drone free muffler, even when running catless race headers! Pair this with Fabspeed Side Muffler Muffler Bypass Pipes for the ultimate emissions compliant GT3 exhaust. This muffler is guaranteed to NEVER BREAK or fail.
SOUND:
This muffler will have a very similar tone to the OEM muffler, however, it will be a bit louder with PSE turned on. It will also sound a bit smoother and higher pitched thanks to our signature X-pipe.
POWER:
On our 991.1 GT3RS test car, paired with Fabspeed Side Muffler Muffler Bypass Pipes, the Rennsport Muffler picked up an impressive 27 ft/lbs of TQ down low at 3,200 RPM. From 2,900 RPM all the way to 5,700 RPM it picks up 10 WHP or more, and peak WHP is up from 446 to 454! That’s a gain of 8 WHP or 9 HP at the crank.
NOTE:
• Requires OEM gaskets and hardware to be reused
• If they are not available here are the necessary part numbers.
• 2x Muffler band straps (99711111970)
• 2x Bolt for muffler band strap (90006736201)
• 2x Each Side Muffler to Center Muffler Gaskets (99711156390, 99711156190)
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.
FSPOR991GT3RSM
The product you are viewing cross references to these numbers
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Fits:
Porsche 911 Speedster - OPF/GPF 2019 - 2020
Porsche 911 GT3 RS (991.2) 2018 - 2020
Porsche 911 GT3 RS (991.2) - OPF/GPF 2019 - 2020
Porsche 911 GT3 / GT3 Touring (991.2) 2018 - 2019
Porsche 911 GT3 (991.1) 2014 - 2017
Elevate your Porsche with the Akrapovič Slip-On Race Line Exhaust System, expertly designed to integrate seamlessly with the original system of your Porsche 911. This system, constructed from high-grade titanium and highlighted by dual round tailpipes, boosts your car’s power and reduces its weight while delivering the distinctive, sporty Akrapovič sound that resonates with racing heritage.
Key Features:
High-Grade Titanium Construction: Ensures durability and a significant reduction in overall weight.Dual Round Tailpipes: Provide an aggressive aesthetic and contribute to the enhanced exhaust flow.
Optional Carbon-Fibre Diffuser: Available to increase visual appeal and aerodynamic efficiency. Note: Specific tail pipe sets are required when combining with the carbon fibre diffuser.
Modular Design: Allows for easy integration with optional link pipe sets and full Akrapovič exhaust systems, including the Evolution Race Header Set with or without valves. This modularity provides flexibility in enhancing sound and performance characteristics to suit your preferences.
With its exceptional workmanship and cutting-edge technology, the Akrapovič Slip-On Race Line exhaust system not only amplifies your vehicle's performance but also its presence on the road or track, ensuring it stands out with a powerful racing growl that matches its enhanced capabilities.
THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.
911 GT3 RS (991.2) - OPF/GPF / 911 Speedster - OPF/GPF:
This Slip-On Race system (S-PO/TI/8) must be upgraded into a full Akrapovič Evolution Race Line exhaust system by combining it with the Evolution Header Set (E-PO/T/6) with side mufflers and valves, which is designed to supplement the performance at higher revs. With complex parts cast in Akrapovič’s own titanium foundry, the expertise used in this system, and the coating finish, the system demonstrates the highest standard of workmanship and technology. Incorporating 100 cpsi sports catalytic convertors in the exhaust manifold and side mufflers, the Evolution Race Line utilizes integrated catalytic convertors and the functionality of the exhaust valves to deliver a complete workout for the senses. The system offers a near-perfect power curve, along with an altered torque distribution, all designed to continually deliver performance as the revs rise. The use of lightweight materials results in big weight savings, and the addition of the Evolution Race Line will have the car performing like a true cup racer, with a powerful racing sound that resonates with every push of the accelerator pedal, producing a deep, pure racing growl to match the performance.
When installing Akrapovič aftermarket optional link pipes with sports catalytic converters or without catalytic converters, which are developed for use on closed tracks only, remapping the ECU is mandatory. When installing Akrapovič aftermarket exhaust system that was developed for use on closed tracks, we recommend remapping the ECU in order to prevent potential »check engine light« warning signals.
Mandatory Parts:
• Evolution Header Set (E-PO/T/6/1)• Tail pipe set TP-T/S/19. When combining the slip-on system with optional carbon fibre diffuser DI-PO/CA/7/G, you must use tail pipe set TP-T/S/17.
• An additional original Porsche stock bracket (Porsche p/n: 99111147391) is required for mounting the Akrapovič exhaust system. Please read the instructions carefully before the start of the installation.
911 GT3 RS (991.2)
• The mandatory tail pipe set TP-T/S/19 needs to be ordered separately. When combining the slip-on system with optional carbon fibre diffuser DI-PO/CA/7/G, you must use tail pipe set TP-T/S/17/H or TP-T/S/17.• The Slip-On Race system can be optionally combined with Link Pipe Set (Titanium) that retains stock headers and removes stock side mufflers, or it can be upgraded into a full Akrapovič exhaust system, either with combining it with Evolution Race Header Set without valves or Evolution Header Set with side mufflers and valves.
911 GT3 / GT3 Touring (991.2)
• The mandatory tail pipe set TP-T/S/17 needs to be ordered separately.• The Slip-On Race system can be optionally combined with Link Pipe Set (Titanium) that retains stock headers and removes stock side mufflers, or it can be upgraded into a full Akrapovič exhaust system, either with combining it with Evolution Race Header Set without valves or Evolution Header Set with side mufflers and valves.
911 GT3 (991.1)
• The mandatory tail pipe set TP-T/S/19 needs to be ordered separately.
• The Slip-On Race system can be optionally combined with Link Pipe Set (Titanium) that retains stock headers and removes stock side mufflers, or it can be upgraded into a full Akrapovič exhaust system, either with combining it with Evolution Race Header Set without valves or Evolution Header Set with side mufflers and valves.
Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
S-PO
The product you are viewing cross references to these numbers
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
Made from titanium
Straight pipe replaces rear centre silencer
FITS 991.1 and 991.2
Porsche 911 GT3 and GT3 RS 2014-2016
Porsche 911 GT3 and GT3 RS 2017-2019
Porsche 911 R 2016
NOT FOR 997
RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector
Replaces centre silencer and tailpipe trims
SOUND - TUBI SOUND
Tubi Sound is the standard sound of Tubi Style exhausts, louder and more powerful than the original sound. This sound represents our brand
END TIPS DESIGN - ROLLED LIP
Tailpipe with external rolled lip
OUTER PIPE DIMENSION - 65mm
CENTRE TIP DIMENSION 50mm
The value refers to the external dimensions of the exhaust end tip
END TIPS FINISH - SANDBLASTED
Titanium is used sandblasted, completely free from flaws, in its natural colour, for a truly stunning appearance
END TIPS NUMBER AND POSITION - 3 CENTRAL
The end tips emerge from the centre
MATERIAL - TITANIUM
KSTi -1,2 ASN titanium alloy was specifically developed for motorsport exhaust systems. It guarantees excellent resistance to oxidation even at high temperatures, with mechanical characteristics similar to those of grade 2 titanium.
CENTRE SILENCER REMOVAL
Complete removal of the centre silencer minimises exhaust back pressure and delivers optimum results in terms of performance and weight reduction
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
TSPO991GT317.001.T
The product you are viewing cross references to these numbers
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
Bypass pipes for side mufflers.
Fits
Porsche 911 GT3 and GT3 RS (991.1 and 991.2 2014-2019)
RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector
Material: Stainless Steel 304
Replacement for Genuine muffler 991.111.048.81
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606609140
The product you are viewing cross references to these numbers