SOUL Performance Resonated Turn-Down Exhaust Tips for 991 Porsche 911 GT3 / GT3 RS / R 

SOUL Performance Bolt-On Resonated Turn Down Exhaust Tips for the Porsche 991.1 GT3 are designed to help track-focused owners meet increasingly strict sound limits without sacrificing the character of the car. Developed for all 991.1 and 991.2 GT3 / GT3 RS models, including the 911R, these tips bolt up to the factory center muffler or any aftermarket system that uses the OEM tip mounting plate and can be swapped on or off in just a few minutes with basic hand tools. The resonated, turn-down design directs and diffuses exhaust energy toward the pavement, trimming several decibels of volume while minimizing any loss in power or response, making them ideal for sound-restricted circuits. Built from robust stainless construction and engineered to the same standards as SOUL’s full exhaust systems, each set is fixture-tested for proper fitment, carefully foam packed for safe transport, and backed by SOUL’s renowned Lifetime Warranty for both street and track use.

Development & Testing

• SOUL Performance responded to the requests of several customers participating in Lime Rock, Laguna Seca, Tremblant, and SCCA Autocross events by developing a specialized solution. Their team devised a replacement tip assembly that can be bolted onto either the factory center muffler or any aftermarket muffler/bypass compatible with the factory tip assemblies. Recognizing that simple turndown tips may not always provide sufficient noise reduction, SOUL Performance took an additional step by incorporating straight-through race resonators into their turndown tip assembly.
• To ensure flexibility and ease of use, the turndown tips are secured to the resonator assemblies using v-band clamps. The inclusion of these clamps allows for convenient loosening of the tips at any time, enabling users to direct them away from sound recording equipment as needed. Unlike slip-on turndowns that may shift and settle on the exhaust piping after being subjected to heat cycles, the v-band clamps maintain a secure fit. The factory tip assembly can be swiftly removed in just a few minutes, requiring the removal of three nuts. This straightforward solution permits easy swapping of the tip assembly on and off at the track.
• This tailored solution has minimal impact on performance since the resonators do not restrict exhaust flow. With a minimum inner piping diameter of 61mm, it is comparable to the measurement of the factory center muffler’s exit holes, which typically range between 59-60mm.
• During their participation in SCCA Autocross events in Florida, Rad utilized stock headers and stock side mufflers, along with an aftermarket center muffler bypass. Upon testing, it was observed that at wide open throttle (WOT) and engine speeds exceeding 7000rpm, Rad experienced a noticeable drop of approximately 3-4 decibels (dB) compared to the factory exhaust tips.
• TRAKCAR, a member of Rennlist, successfully utilized the SOUL Performance exhaust tips with their stock exhaust system to comply with stringent sound restrictions at the Bilster Berg circuit in Germany.

Construction

• The brackets undergo a laser cutting process and are meticulously hand finished to ensure precision and quality. V-band clamps are thoughtfully included for convenient mounting. As for the SOUL race resonators, they are constructed from high-quality stainless steel, exhibiting exceptional durability specifically engineered to withstand the rigors of track use.

Sound Levels

• The sound produced by the exhaust system is influenced by various factors, and each measurement scenario is distinct, with variations in sound distance and angle. It is important to note that this product does not guarantee a specific level of sound reduction, as results can vary.

Features

• Direct bolt-on resonated turn-down tips
• Designed to help meet strict track sound limits while preserving performance and character
• Compatible with factory center muffler and any system using OEM tip mounting plate
• Straight-through race resonators and turn-down outlets trim several dB without restricting flow
• V-band clamped turndowns allow easy angle adjustment away from sound meters and secure fit under heat cycles
• Factory tip assembly removes in minutes with just three nuts
• Robust stainless construction with laser-cut, hand-finished brackets for track-ready durability
• Backed by SOUL Performance’s Lifetime Warranty

Applications

• Porsche 911 GT3: 991.1, 991.2 (2013-2019)
  [3.8L F6]
  
• Porsche 911 GT3 RS: 991.2, 991.2 (2015-2019)
  [4.0L F6]
  
• Porsche 911 R: 991.1 (2016)
  [4.0L F6]
  

Notes

• Fits all models with factory center muffler exhaust or aftermarket exhaust that utilizes factory tip mounting plate
• Soul Performance Products stands behind the quality and performance of all their exhaust components with an esteemed lifetime warranty, which applies to both street and track usage

About SOUL Performance

SOUL Performance Products was founded by a group of automotive enthusiasts with deep industry experience and a commitment to doing right by their customers. Their mission is to deliver outstanding performance parts at fair pricing, backed by quality service and one of the best warranties in the industry. SOUL develops high-performance exhaust systems and components that are engineered for exceptional sound and proven performance, with products ready to ship quickly worldwide. Guided by core values of honesty, transparency, and passion for cars, they build strong community connections and prioritize customer satisfaction at every step. Operating out of a dedicated facility in Willow Grove, Pennsylvania, SOUL combines hands-on research, engineering, and manufacturing expertise to create parts that meet and exceed the demands of serious enthusiasts.