Drop weight. Boost power. Transform your Porsche 718 Cayman or Boxster with the RaggDoll Motorsports 3.5” Titanium Turbo-Back Exhaust System. Engineered for serious builds, this system eliminates all factory restrictions and starts directly at the turbo with a true 3.5-inch downpipe for maximum velocity and zero compromises.
This exhaust retains a full 3.5” diameter through the critical first section before branching into two optional configurations based on your power goals:
– 3.0” mid-pipe (ideal for builds under ~500 HP)
– 3.5” full system for maximum output and flow
Both setups exit through dual 4.0” slash-cut titanium tips, deleting the factory Y-pipe and drastically improving performance.
Our real-world testing at 24 PSI proves it — larger piping unlocks more power, even at the same boost pressure.
Test Results:
• 3.0” DP + 3.0” Exhaust = 513 WHP
• 3.0” DP + 3.5” Exhaust = 533 WHP
• 3.5” DP + 3.0” Exhaust = 548 WHP
• 3.5” DP + 3.5” Exhaust = 569 WHP
The takeaway: pipe diameter and continuity are critical for maximizing flow and turbo efficiency.
• True 3.5” turbo outlet to first V-band (no reducers)
• Titanium or stainless steel construction
• Drops 65+ lbs vs. OEM (titanium option)
• Optional 3.0” or 3.5” mid-pipe with resonator
• Dual 4.0” slash-cut titanium tips
• Raw motorsport sound, no drone
• Direct bolt-on fitment for all Porsche 718 models
• Custom resonator and catalytic options available
• Faster turbo spool and boost response
• Improved power throughout the RPM range
• Reduced exhaust gas temps and backpressure
• Significant weight savings
• Clean OEM-like fitment with no modifications needed
•3.5” titanium or stainless downpipe (cat or catless)
• 3.0” or 3.5” mid-pipe with optional resonator
• Dual 4.0” titanium tips
• V-band clamps, install hardware, and accessories
For 718 owners chasing serious horsepower and sound, the RaggDoll 3.5” Titanium Turbo-Back Exhaust is a no-compromise upgrade. It’s race-tested, enthusiast-built, and ready to elevate your Porsche’s performance on the street or at the track. Built to order. OEM fit. Loved by real drivers.
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.
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