Performance Exhausts & Accessories
Porsche 997.2 Twin Turbo X-cellerator
Exhaust System (2010+), 2.5"/63mm quiet or 3.0"/76mm Loud
The SpeedTech X-cellerator X-flow exhaust was designed to
offer the discerning Porsche enthusiast the ultimate exhaust
system with a number of performance and sound options in one
complete package.

CROSSFLOW or X-FLOW DESIGN - By combining the exhaust pulses from both sides of the Porsche boxer motor with an "X" or "cross-flow" at the center of the exhaust, we have developed a unique, exotic sound that has to be heard to be appreciated. Our trademark sound is well known and highly respected throughout the industry.

DESIGN OPTIONS - The X-cellerator system offers catalytic converter bypass pipe and muffler bypass pipe options resulting in several possible exhaust configurations, including:

Our modular design incorporates Accuseal clamps for quick
and easy swaps between the various sound and performance
levels. This versatile design is very easy to use and offers quick installation and/or swaps.

NOTE: All OEM cat, 3" muffler delete X-Pipe systems ship with an adapter that tapers down to the OEM cat diameter. Should your goals change in the future and you want to add our Hi-Flow cats with 3" outlets or dual 3" tips or both (which would yield a full 3" system as pictured top right), the option is available with SpeedTech plug and play parts. Full 3" cat bypass pipes are also a plug and play option.

PERFORMANCE - The SpeedTech X-cellerator system eliminates approximately 20 pounds of weight (full system w/ cats) compared to the Porsche OEM exhaust. Additional weight savings can be realized with use of the off road RACE configurations. Whether lap times or straight line speed is your goal, the weight savings will help yield quicker track times.

Additionally, our free flowing, straight through design, along with German HJS Hi-Flow catalytic converters will improve the performance of your Porsche 997TT by enabling extremely quick turbo spool, along with increased torque, higher horsepower and much crisper throttle response! The result: Faster track and ¼ mile times, as well as better everyday performance. And the pronounced engine note will provide an enhanced driving experience for all types of uses.

All components are constructed of T304 stainless steel. This is a
very well built, top of the line exhaust system for the discriminating enthusiast and very fitting for the Porsche turbo.

SOUND - The SpeedTech X-cellerator X-Flow exhaust emits a fantastic GT3 type note. We do not use mufflers on this platform, as the motor is very quiet by design. We offer several distinct sound levels to suit a variety of tastes and uses:

We offer a lifetime warranty of manufacturing defects for the
original owner.

The SpeedTech X-cellerator is designed, tested and manufactured in the USA .


Pricing & Options
Our 997.2TT X-Pipe replaces the center muffler and provides a fantastic exotic sound - very fitting and tasteful for the 997.2TT. Available in 2.5" and 3.0" versions. Mounts directly to the OEM catalytic converters or can be used with SpeedTech Hi Flow converters / Bypass pipes. Includes mounting straps, all hardware, decals and installation instructions. Modular design for ease of use and installation. Can be substituted with X-cellerator mufflers.

Tips: $3,495.00

Note: Specify 2.5 or 3.0 when ordering. We recommend the 3.0 for most customers wanting more volume, as the newer 997.2TT DFI motor is very quiet compared to previous generation engines and as a result, requires a full 3" system to get an appreciable sport note from the new DFI motor.
Competition Muffler Delete X-Pipe Exhaust System
Not all “X-Flow” or “Crossflow” designs are the same - We tested several forms of X-flow design in our development of this system to arrive at our signature sound - a refined, tuned, exotic tone of the highest quality. Our final SpeedTech "X" design was engineered to provide the best exterior note combined with exceptional interior comfort for a performance exhaust. There is no substitute for our commitment to extensive R&D to achieve these goals.

Our X-cellerator system has been chosen by numerous customers over several competitors in direct testing.

When you purchase a SpeedTech system, you are purchasing a one of a kind, superior sounding and performing exhaust designed by long time Porsche enthusiasts.
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SpeedTech 997.2TT Polished "Dual Wall" Twin Tips
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997.2TT 3.0 "RACE" X-Pipe - Just thought I would provide some feedback on this exhaust, as I had it installed on my car this summer. I couldn't be happier with it. I was originally about to pull the trigger on a Europipe and after taking a ride in turbo S with Europipe installed, I decided to go the X-Pipe route instead and with the SpeedTech exhaust. There have been other threads that have highlighted that exotic sound that comes from the exhaust. It really is true. There is a Ferrari 458 Speciale and a 991 GT3 on my street and I can honestly state that with the X-pipe - I feel like I have a comparable sound. But I think one thing that has not been mentioned is the degree of difference the Sport button now makes. On the stock exhaust there is a minor increase in sound, however with the Speedtech X-pipe there is a dramatic difference in or out of sport mode. Out of sport mode there is an improvement in sound and it is still louder and more throaty - but not in any way annoying on the highway ! etc. In sport mode there is a true transformation - and that exotic sound. I truly couldn't be happier. Just thought I would pass it on for those trying to turn their Turbo S into the something a bit more exciting sounding.

Sven, Canada

997.2TT Catless RACE Exhaust w/ 3" QUAD TIPS - Ok... I'm a grown up man in my early 30's. But I'm jumping around in my car and smiling silly! John, the car sounds sick! I mean, it growls, barks, screams, ..... and ..........too loool

You guys created the perfect sound note for the 997.2TT... I'm not sure anyone can match it! I've heard louder setups... I've heard more quite setups .... but the note of music is something else.. every time I floor it I grin :)

Ali, Dubai

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3" Catless "RACE" X-Pipe w/ Dual 3" Tips
SpeedTech 997.2TT X-cellerator 3.0 catless RACE X-Pipe w/ Full 3" Dual Tips
Click for
997TT 3.0 "LOUD" - After trying some exhaust systems ... I ended up with Speedtech X flow 3 inch system ... Sound is awesome and i wont change it...
HJS 130mm x 200cpi Directional
Catalytic Converters for OEM Exhaust
Full 3" HJS 130mm x 200cpi Directional
Catalytic Converters for
SpeedTech X-Pipe
Close-up of SpeedTech 997.2TT FULL 3" Polished Dual Tips
FULL 3" Cat Bypass Pipes
The SpeedTech exhaust system you see above is on my 2011 TT (posted on Rennlist) , it looks better in person and on the car - the dual wall tips are unique and beautiful. The sound level is what I feel is perfect. I have owned many other exhaust systems from Akro, Borla, Magnaflow, IPE and the SpeedTech system is the best sounding - with 1st class materials and workmanship. John is wonderful to work with. I never went more than 2 to 3 hours without a return message on any question or idea I had. The sound of the OEM exhaust system has always been a disappointment. I did extensive research before I decided upon SpeedTech. My car now sounds like a high end sports car should. This may sound strange, but the driving experience has completely changed with the new sound. I can still listen to the radio and have a conversation. The background exhaust sound is there, but not overbearing unless you get aggressive - then it screams! I do notice I increase my speed, just to hear the sound, so care is needed and an eye on the speedo. Remember when you were a kid and put playing cards with clothes pins on your bike to get a macho sound. Well, my car sound now gives me that special feeling I remember as a kid. It just makes our special Porsche more fun to drive!

Bruce in Scottsdale, Arizona
Tel: (603) 225-4600
Fax: (603) 228-4604
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