Description
SOUL designed this race exhaust for aggressive track use, built around durability, lightness and performance. It was developed with feedback from shops, technicians and drivers who tested GT4 exhausts on their own over the years. SOUL is direct about the trade-off: this system puts track performance ahead of sound attenuation, so it is very loud and drone will be present even with the resonators. For a more refined exhaust on the street, SOUL points owners to its valved system for these cars.
Key features
- Full 2.5 in over axle pipes, shaped to leave clearance for the axles and sway bar end links on heavily modified or lowered cars
- Bespoke SOUL mounts that shed over 5 lb compared with the factory mounts, and are easy to repair or replace after a track incident
- Forward piping attached to a SOUL transmission mounting brace with heavy duty Mikalor band clamps
- Rubber vibration dampeners support the over axle piping and cut flex and vibration stress
- Slash cut tips in Signature Satin or Brushed
- New high grade hardware for the header to exhaust flanges and installation instructions included; fixture-tested for fitment and foam packed; SOUL lifetime warranty for street and track use
Specifications
- Material: mandrel-bent .065 in wall, 2.5 in diameter T304L stainless steel tubing
- Brackets: laser cut, press brake bent and TIG welded
- Welding: all welds back purged
- Designed and built in-house at SOUL’s Willow Grove, PA facility
Fitment
- Porsche Cayman GT4 and Boxster Spyder, 981 generation
- Maker wording: fits all 981 Porsche GT4 / Boxster Spyder vehicles (2015-2016) with factory or SOUL headers (differences in tolerances from other manufacturers can create issues with over axle pipe clearance)
- Headers are not included. The system bolts to the factory headers or to SOUL’s own headers; other brands’ headers may not clear the over axle pipes.
- Not for other 981 Boxster and Cayman models or for 718 cars: SOUL sells separate systems.
Part numbers
- POR.GT4M.RER.SLT: Signature Satin, slash cut tips
- POR.GT4M.RER.SLTBR: Brushed, slash cut tips
Good to know
- Track-focused: SOUL says this racing system was designed primarily for track use and performance over sound attenuation. It will be very loud, and even with resonators drone will be present.
- SOUL does not recommend running this exhaust with aftermarket headers on the street.
- SOUL’s notice: this product is not CARB certified and may not be legal for use on emissions controlled vehicles; intended for off road use only.
- SOUL publishes no emissions statement or CARB EO number for this system; check local emissions and noise rules before fitting.
- Professional installation recommended; installation is not included.
