The RaggDoll Motorsports Blow-Off Valve is engineered specifically for the Porsche 718 Cayman and Boxster (982). Made from high-grade billet aluminum, this is the performance and reliability upgrade your turbocharged engine needs. Say goodbye to cracking plastic OEM valves and hello to consistent boost control and aggressive sound.
This dual-function valve gives you the flexibility to run a full recirculating setup or a partial vent-to-atmosphere configuration for that iconic turbo sound. Whether you’re going for stealth or want to hear every shift, this valve adapts to your build and your style.
Crafted from billet aluminum with a lightweight two-piece piston made of brass and aluminum, this valve offers rapid response and high boost tolerance. Precision-calibrated springs ensure smooth operation under pressure—perfect for stock or upgraded turbos, including all RaggDoll performance systems.
Installation is nearly effortless once the engine cover is removed. This compact design fits seamlessly onto factory or aftermarket turbo setups, making it one of the easiest high-performance upgrades you can do.
• Fully billet construction for durability
• Dual port design for rich, aggressive sound
• Compatible with factory and upgraded RaggDoll turbos
• Handles high boost without leaks or failures
• Quick and clean install process
• Customizable airflow (recirc or VTA)
Whether you're daily driving or pushing the limits at the track, the RaggDoll Blow-Off Valve gives your Porsche 718 the boost control and signature sound it deserves.
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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