The RaggDoll Motorsports Series One (RS1) is the original performance turbocharger that started it all. Designed for the Porsche 718 / 982 Cayman and Boxster S & GTS 2.5L engines, this hybrid VGT turbo offers lightning-fast spool, proven durability, and factory-like drivability — with over 500 wheel horsepower possible using the right supporting mods.
This isn’t just about horsepower. On the 718 platform, intake air temperature (IAT) is everything. Built to flow over 60 lb/min but optimized for the high-400s, the RS1 is the right turbo for the power you actually use — keeping your IATs in check while delivering massive performance gains without stressing your intercooler system.
• Direct bolt-on VGT hybrid turbo – no mods needed
• Custom RaggDoll compressor wheel for fast throttle response
• Matched high-efficiency turbine for thermal stability
• Inconel turbine wheel rated to 1050°C / 1922°F
• 30% more peak horsepower than the factory S turbo
• Predictable and stable boost delivery — no lag spikes
• Cool, efficient IATs at higher boost levels
• Built from 100+ hours of R&D and motorsport testing
The RS1 is ideal for 2.5L S and GTS owners looking for the fastest-spooling turbo that still delivers a knockout punch. Whether you're a canyon carver, track regular, or street assassin, this turbo offers the best balance of response and power — without compromising reliability or street manners.
Looking for even more power? Step up to the RaggDoll RS2 Turbo for nearly 600 WHP with additional supporting mods.
Install is simple: just transfer your OEM wastegate and VGT module (three screws) to your new RS1 turbo. We intentionally leave these off during shipping to avoid damage and ensure you retain your proven components — no cheap electronics or mystery parts.
• Advanced high-flow compressor wheel: No surge, no lag
• Precision-matched turbine for efficient response
• Designed to balance airflow and torque without compromise
• Optimized for 500 WHP+ with excellent midrange power delivery
We strongly recommend pairing the RS1 with our RaggDoll High-Flow Turbo Inlet for maximum breathing and performance.
Every RaggDoll RS1 turbo goes through a meticulous remanufacturing process:
• Disassembled, cleaned, and fully inspected
• Machined housings for the requested upgrade
• Compressor and turbine wheels dynamically balanced separately
• Reassembled and VSR-balanced as a full unit at 250,000 RPM
• Final compressor housing is laser-etched for identity and pride
You’ll notice the difference as soon as you unbox it — this isn’t just another turbo. This is RaggDoll-level craftsmanship.
• Complete RS1 turbo assembly
• New exhaust housing gasket
• Option to upgrade to new BorgWarner unit with RaggDoll wheels
The RaggDoll Series One (RS1) Hybrid VGT Turbocharger delivers unbeatable spool and serious horsepower in a true bolt-on solution. If you want instant response, road-course reliability, and enough power to pull ahead of the pack — the RS1 was made for your Porsche 718 S or GTS.
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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