Soul Performance Products - Side Muffler Bypass Pipes (991.1 and 991.2 GT3)


Designed to Fit

  • 2014 - 2016 Porsche 911 GT3 / GT3 RS (991.1)
  • 2017 - 2019 Porsche 911 GT3 / GT3 RS (991.2)

Product Details

Deleting the side mufflers yields huge weight savings, helps with heat management in the engine bay, and keeps the rear tires cooler. The hole leading into the secondary pipe is enlarged to equalize pressure in the center muffler – promoting longevity. Flex bellows allow for easy installation and increase durability under extreme racing conditions in a similar manner to OEM. Large 3″ diameter primary piping increases flow. High quality valves operate like factory.


  • Fits all Porsche 991.1 / 991.2 GT3 / GT3 RS models including 911R (2014-2019)
  • Bolt-on fitment with no check engine lights
  • Weighs 35.4 lbs / 16 kg less than factory exhaust components (44.9 lbs vs 9.5 lbs)
  • All Soul Performance Products components are backed by a renowned Lifetime Warranty for both street and track use

      DEVELOPMENT AND TESTING: SOUL was approached to create an exhaust solution to maximize the sound and weight reduction of the exhaust system while maintaining reasonable cabin presence and investment. We took this one step further by making this solution modular by combining our side and center muffler deletes. This means you can easily mix and match the system with the factory center muffler or side mufflers to experiment with different sound characteristics of the car and reduce or increase overall sound level. As deleting the factory center and side mufflers at the same time inherently deletes the factory support brackets, we created bespoke support brackets for this combination of components.

      This system is available in a non-valved and valved configurations. The valved configuration maintains factory PSE button control. With valves closed, 100% of the exhaust is channeled through smaller diameter piping before entering the expansion chamber of our center muffler bypass. This will make a notable difference in sound level on the exterior of the car, though will be less noticeable in the cabin of the car. The expansion chamber design of our center muffler does a great job at reducing drone/vibration in cabin, and has the most reasonable cabin presence of any “straight pipe” headerback/catback configuration we have experienced on the GT3 platform.

      CONSTRUCTION: Each exhaust component is made from mandrel-bent T304L stainless steel tubing. Mikalor Supra Heavy-Duty W4 Clamps are included to mount the system to the vehicle (also included to mount Single Wall tips). Projection welding spots, swinging bridge, high-strength stainless steel bolt and the exclusive design of the captive nut and trunnion offer superior clamping forces and longevity. AccuSeal clamps are included to connect the exhaust to the side mufflers.  A variety of exhaust tip options ranging from double wall tips to attractive single wall stainless steel tips are available. Logo customization – or no logo at all is optional – contact us for something special. The 991.2 tips are longer due to the difference in rear bumper depth from the .1 model, providing perfect fitment for all years. 

      LIFETIME WARRANTY:  Enjoy your Soul exhaust components with confidence on both the street and track as they are covered by our Lifetime Warranty! Our team will quickly work with you to resolve any questions or issues that you may have.


      About Soul Performance Products

      Our mission is to provide our customers with outstanding parts, pricing, and service backed up with the best warranty in the industry.

      Soul Performance was formed by a team of auto enthusiasts with automotive industry experience looking to do the right thing by our customers. We aim to deliver exemplary service worldwide by developing incredible sounding, proven performing components that are always ready to ship to you quickly.


      • Do right by our customers, always – no customer left behind
      • We believe in honesty, unwavering ethics, and transparency as we operate
      • Our product warranty extends longer and broader than our competition
      • We actively participate in the communities we cater to
      • We build connections to further our ability to deliver a premium experience
      • Our passion for cars and the automotive industry drives our business
      • Our experience helps us meet your expectations
      • We listen to our customers and the demands of the market to meet and exceed expectations
      • We want to be our customers first choice without hesitation
      • We consider both quality and pricing to deliver greater value to our customers
      • Our success will be measured by recommendations to other potential clients

      FACILITY Soul Performance Products is located in a 15,000 sq ft facility north of Philadelphia in Willow Grove, Pennsylvania. We make great use of this space to keep our products in stock, ready to ship. Our mission is to quickly get you the parts you need with no delays. Our R&D area is equipped with two BendPak lifts and all tools necessary to allow us to design, engineer, test, prototype, and fixture components. Our shipping area is set up to ensure that all components get a thorough inspection, orders ship complete with all hardware, and that products are well packed.

      Nearest hotel: SpringHill Suites by Marriot – .3 miles Nearest airport: Philadelphia International Airport (PHL) – 36 miles

      MANUFACTURING Soul Performance Products is partnered with ISO 9001 Certified aerospace manufacturers, enabling us to work with technology and industrial scale, extreme precision equipment down to +/- 0.002 inches that would otherwise be out of the limits of an exhaust manufacturer. Our capabilities include waterjet and laser cutting, tube bending, CNC machining, robotic welding and much more. We strategically deal with vendors worldwide to find appropriate components, such as high quality HJS HD catalytic converters. Our mission is to provide the best possible results for our customers at great pricing.

      If you’re interested in participating in new product development or have any customization desires we’re always happy to accommodate wherever possible. Need custom exhaust tips to match your unique build? We can do that.

      PERFORMANCE We’re constantly building relationships with shops across the world to prove our products on various dyno setups under different conditions. We don’t want you to take our word for it alone, but allow us to validate ourselves through multiple outside channels as well. If you’re interested in testing our components, do contact us.