Drop Weight. Boost Power. Eliminate Restrictions.
Transform your Porsche 718 Cayman or Boxster with the RaggDoll Motorsports Stainless Steel Turbo-Back Exhaust System, engineered for high-output street and track builds. This system starts directly at the turbocharger with a true 3.5-inch downpipe as it should (and is the only correct way whether you have a 2.0L or 2.5L), eliminating factory bottlenecks and maximizing exhaust gas velocity from the very first inch.
Designed for the 2.0T Base, 2.5T, and 2.5T GTS platforms, this is a no-compromise exhaust solution for owners chasing real power, sharper response, and a raw motorsport sound.
Purpose-Built for Unmatched Exhaust Flow
Unlike stepped or necked-down systems, this exhaust maintains a full 3.5” diameter through the most critical section before branching into two optimized configurations based on your horsepower goals:
Both configurations delete the restrictive factory Y-pipe and exit through dual 4.0” slash-cut Stainless Steel tips, delivering a clean, aggressive finish.
Real-world testing at 24 PSI confirms what physics already tells us — pipe diameter and continuity directly impact turbo efficiency and horsepower, even at the same boost pressure.
Test Results:
Takeaway: Larger, uninterrupted exhaust flow unlocks more power, faster spool, and reduced backpressure.
Ideal for tuned 718s, upgraded turbo builds, ethanol setups, and track-focused cars looking for maximum exhaust flow, faster spool, and consistent power delivery.
Professional installation is recommended. ECU tuning is strongly recommended to fully take advantage of the increased exhaust flow and reduced back-pressure, especially when paired with upgraded turbochargers or fueling modifications.
Optional/required extras: ECU calibration, upgraded turbocharger, high-flow intake and inlet components
For Porsche 718 owners chasing serious horsepower, reduced weight, and an unmistakable motorsport sound, the RaggDoll Stainless Steel Turbo-Back Exhaust System delivers without compromise.
RaggDoll Motorsports exhaust systems are engineered solutions—not sound-only upgrades.
Real flow improvements.
Track-tested durability.
OEM-level fitment with motorsport intent.
Built differently—because exhaust flow is the foundation of turbo performance.
Liza & most of the time Vince is amazing...lol. Nah, kidding, these guys are awesome folks to deal with. I purchased their Stage 2 turbo, turbo inlet, intercooler, engine tune, and high pressure fuel pump for my 2018 2.5L Boxster GTS and they're products and service have been top notch throughout the entire process.
Raggdoll Motorsports set up two dyno sessions for my Porsche Turbo S. The Porsche touts a 4.0-liter built engine and head work facilitated by Sam at ByDesign. Also has the XR ByDesign turbo kit with all the supporting mods. The first session the PDK kept transitioning out of manual mode. During the second session a boost leak at the throttle body boot ended the session early. We managed 812 hp on a Mustang dyno at only 20 psi of boost.
The people behind RaggDoll Motorsports have been in the game for a very long time and really know their stuff. They have a passion for modifying cars and are enthusiasts before anything else.
I purchased a RENNEN turbocharger for my 718 T. I had a special request, which was to get the turbine housing coated with Swain Tech white lightning thermal barrier coating and RaggDoll accommodated without hesitation even though it was something new for their team.
Hey All! Shout out to Liza and @Raggdolls718. Amazing customer service, product knowledge and a top quality product. Liza went out her way to accommodate my tight timeframe and the level communication and level of detail shared was amazing.
I purchased the Raggdoll Series One turbocharger upgrade and the turbo inlet upgrade from RMS for my Porsche 718 Cayman GTS and was very pleased with both the products and the customer service from RMS!
Engineered for the 718 platform, trusted worldwide. RaggDoll delivers high-performance parts, custom turbo innovations, and expert-level support for Porsche 718 drivers and tuners—from Las Vegas to Germany, Hong Kong, and beyond.
