TurboXS

TurboXS: Application-Specific Performance Since 1999

Founded in 1999 and headquartered in Gaithersburg, Maryland, TurboXS has spent over two decades earning its reputation as a go-to manufacturer for turbocharged vehicle enthusiasts. Rather than chasing a one-size-fits-all approach, TurboXS focuses on application-specific engineering — meaning every component is designed, tested, and refined for the exact platform it serves. The result is a lineup that resonates with Subaru WRX and STI owners, Mazda RX enthusiasts, Honda Civic tuners, Ford EcoBoost builders, and beyond.

Exhaust System Expertise

The heart of the TurboXS catalog lives in the exhaust path. Their turbocharger downpipes are among the most recognized products in the Subaru aftermarket, featuring a massive cast 304 stainless steel bellmouth upper section that maximizes exhaust gas flow from the turbo outlet. The two-piece design not only simplifies installation but also allows for catalytic converter removal without replacing the entire downpipe — a practical engineering detail that sets TurboXS apart. Coverage spans legacy WRX/STI generations through modern platforms including the Ford Mustang EcoBoost, making TurboXS a versatile choice across the forced-induction world.

Paired with their downpipes, TurboXS offers high-flow catalytic converters engineered for maximum exhaust throughput while retaining emissions equipment. Options range from 200-cell metal matrix units to 100 CPI (cells per inch) metal substrate catalysts — both of which dramatically outflow restrictive OEM converters and are designed to bolt seamlessly into TurboXS exhaust systems. For the 2015+ WRX platform, their catalytic converter pipes — often called front pipes or J-pipes — combine a high-flow catalyst directly into the front pipe assembly, offering a power-conscious upgrade path without abandoning emissions hardware entirely.

A Broader Performance Lineup

Beyond the exhaust path, TurboXS has built a well-rounded catalog that touches virtually every system in a turbocharged build. Their blow-off and bypass valves — including the well-known Type H-RFL and Type XS Hybrid BOVs — are staples in the WRX community. Front-mount intercooler kits, boost controllers, and intake hardware round out a lineup designed so that builders can source multiple components from a single trusted manufacturer. TurboXS also produces practical accessories like their TowTag license plate relocation kit, demonstrating that their engineering attention extends beyond raw performance.

Why Enthusiasts Trust TurboXS

What distinguishes TurboXS from broader aftermarket suppliers is their deep focus on a defined set of platforms. Every product reflects hands-on development knowledge of the turbocharged vehicles they serve, and that specificity shows in fitment quality and install experience. For the performance-minded builder who wants parts engineered for their car rather than adapted to it, TurboXS continues to deliver after more than 25 years in the industry.