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SOUL Street Exhaust Package. Porsche 981 Boxster / 981C Cayman (2013-2016) ❭ POR.981.STPKG
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
Experience the perfect balance of refinement and excitement with the SOUL Street Package for Porsche 981 Boxster and Cayman models. This system pairs SOUL Valved Exhaust with Long Tube Street Headers, delivering noticeable power gains, sharper throttle response, and a soundtrack that adapts to your driving mood—all without triggering a check engine light. With valves closed, the system offers a smooth, drone-free tone ideal for daily driving. Open the valves, and the flat-six unleashes its full roar through a straight-through flow path, exiting via exhaust tips in the style and finish of your choice. Built around large-diameter runners and high-flow catalytic converters, the headers maximize flow while enhancing that signature Porsche sound. Every system is backed by our industry-leading Lifetime Warranty, giving you confidence both on the street and at the track.
Package Includes:
• SOUL Performance Products 981 Cayman Valved Exhaust System
• SOUL Performance Products 981 Cayman Long Tube Street Headers
• Fits all Porsche 981 Boxster / Cayman models (2013–2016)
• Increased performance and sound with no check engine light
• Direct bolt-on installation with included instructions
• Multiple tip styles and finishes available – custom options too
• Covered by SOUL’s Lifetime Warranty for street and track use
DEVELOPMENT:
For the 981 platform, we engineered a system with properly sized 2” runners and optimized collectors to unlock maximum power from the 3.4L engine, while still delivering impressive gains on the 2.7L. We selected high-flow catalytic converters sized for both performance and durability—avoiding the compromises of smaller, cheaper alternatives. The result is a superior exhaust that delivers a broad spectrum of sound: valves open reveal a CUP car–inspired roar, while valves closed provide a refined, drone-free tone. Thanks to SOUL mufflers, even with aftermarket headers the exhaust remains composed and reserved when the valves are shut.
CONSTRUCTION:
Our headers are precision-engineered and crafted from T304L stainless steel for strength and performance. Featuring port-matched flanges, smooth-radius primary tubing, and optimized collectors, they deliver maximum exhaust flow and power gains. Each system is mandrel-bent, fitted with reinforced muffler casings for durability, and rigorously quality-checked before shipping to ensure the highest standards.
TIPS:
Choose from several different tip styles and finishes – from single wall 321 stainless tips to double wall chrome tips. Logo customization and custom tip colours are available by request. Titanium single wall tips are also available and save nearly a pound of weight over stainless steel tips!
BOLT ON AND GO:
Each exhaust is rigorously quality-checked, tested in a fixture to guarantee fitment, and then foam packed to ensure it arrives in perfect condition. Thorough installation instructions are included in the box for a straightforward install that can be performed by most DIY enthusiasts.
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 issues or answer any questions that you may have.
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.
POR.981.STPKG
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16

Fits:
Porsche 991 Carrera S 3.8L
These simple U/J pipes remove the mufflers that are tucked up in the rear quarter panels. Why the reason for these I do not know. Typically in the past we either see a main centre muffler or 2 mufflers with catalyst pipes. So this was the first simplest part to change out. Keeping the same diameter for a perfect OEM replacement, these pipes are straight through which not only eliminates any muffler packing or baffling, but also the weight. Each stock muffler weighs approximately 15.6lbs. The Designtek Secondary Exhaust Muffler Bypass Pipes are about 3lbs each. Now eliminating restriction, we have also saved about 25lbs off the rear end. Because this part still retained the factory headers with cats and the factory center muffler, it added a slightly deeper tone to the exhaust but not a drastic droning change that a full exhaust could. Upon revving the car out stationary and on the dyno, you could hear the tone change nicely as you past the 4000rpm mark.
Garage Notes: The pipes sometimes rub on the heatshields causing a resonation through the car. This can be sorted by redressing the heatshields but isn't a straight forward bolt up and go replacement.
The sound its self is quite impressive and very sporty from the outside but to drive causes a pretty bad droning sound under normal driving conditions. This exhaust peaks at 101decibels
According to the factories dyno test, the secondary muffler bypass pipes really start achieving performance from 3700rpm all the way to redline. With a baseline test in 3rd gear and all wheel drive (have to for the dyno and no warning lights), the car made 344HP and 289ft/lbs of torque. Based on the ambient temperature, the factories Mustang Dyno, and 91octane fuel, this is about right considering the car comes with 400bhp. With the addition of our pipes, the car put down 358HP and 298ft/lbs of torque gaining 14HP and 9ft/lbs at the peak.
Click 'Zoom in' for large parts diagram.
3606009913 replace No11/12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606009913
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16

Porsche 991 Carrera 3.4L
Porsche 991 Carrera S 3.8L
The secondary sports exhaust boxes are designed to give the car a deeper sound, these car be added to the factory exhaust parts and replace the two side muffler cans.
Powerful, robust and sporty. Better still, it can be further enhanced thanks to the sports exhaust system, featuring a modified secondary sports exhaust boxes, the sound varies with driving behaviour, ranging from a robust output during normal road driving to a distinctively more aggressive tone during performance use.
Click 'Zoom in' for large parts diagram.
3606009913 replace No11/12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606009923
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
Loud and aggressive performance exhaust system designed and recommended for track use or for those looking for maximum sound on the street; replaces the restrictive factory mufflers with a free-flowing resonated design.
FEATURES:
• Fits all Porsche 991 Carrera vehicles from (2012+)
• Saves 12 lbs from the rear of the vehicle
• Choose from Fabspeed's Deluxe Quad-Style Tips (available in Polished, Black or Carbon Fibre finish) or Deluxe X-50 Style Tips
• Factory OEM tips are compatible with the Supercup system for both the single inlet tip on the non-PSE equipped models and also the dual inlet PSE equipped models.
• Designed to be compatible with factory/OEM headers and center muffler (NOTE: Please call/contact us if you're interested in combining this system with additional Fabspeed exhaust components.)
• Dramatically reduces backpressure and improves exhaust flow and sportscar sound
• 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
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.
FSPOR991SCUP
The product you are viewing cross references to these numbers
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