The RaggDoll Motorsports BMC Performance Drop-In Air Filter is a high-flow replacement filter for the factory airbox on the Porsche 718 Cayman and Boxster platforms, designed to improve intake airflow while retaining OEM fitment, filtration quality, and daily drivability. Built for tuned street cars and performance-oriented setups, it delivers improved throttle response and airflow efficiency without added noise or compromise.
The factory paper air filter is designed primarily for long service intervals and cost efficiency—not maximum airflow. As power demands increase through tuning, upgraded turbo components, or supporting airflow modifications, the stock filter becomes a minor but real restriction.
The BMC Performance Drop-In Air Filter replaces the factory element with a high-quality, washable cotton filter that increases airflow while maintaining excellent filtration—allowing the turbo to breathe more efficiently without changing the intake system.
Ideal for stock or tuned 718s, daily-driven performance builds, and owners wanting subtle airflow improvementswithout altering the factory intake system.
Simple drop-in installation. No tuning required. This filter can be installed on completely stock vehicles or paired with other airflow upgrades.
Recommended pairing: turbo inlet elbow, intercooler upgrades, ECU calibration (for tuned vehicles)
The RaggDoll Motorsports BMC Performance Drop-In Air Filter is engineered to complement other airflow improvements—such as turbo inlet elbows and exhaust upgrades—by reducing restriction at the very first stage of the intake path.
RaggDoll Motorsports selects components that make real, measurable improvements—without sacrificing OEM-level fitment or reliability.
Simple upgrade.
Proven performance.
Built differently—because every restriction matters.
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.
