Elevate the performance of B58-powered BMWs with the ARM 6" Catted Downpipe. Expertly designed by ARM, this downpipe incorporates a 6" high-flow 200-cell ceramic catalytic converter, offering enthusiasts a perfect balance between enhanced performance and environmental consciousness.

Differentiating itself from traditional alternatives, the ARM 6" Catted Downpipe is meticulously crafted to eliminate the undesirable odor linked to increased emissions. Despite including a high-flow catalytic converter, this downpipe retains the increased volume and improved turbo spool characteristics, ensuring an exhilarating driving experience without compromises.

By replacing the factory downpipe, the ARM 6" Catted Downpipe introduces a 200-cell catalyst with a 6" diameter, optimizing exhaust flow. This upgrade unlocks additional power and torque while contributing to a reduction in emissions. Empowering drivers to run Stage 2+ tunes confidently, it delivers a distinctive and vibrant exhaust note, enhancing the overall driving experience of B58-powered BMWs.

Invest in the ARM 6" Catted Downpipe for a comprehensive upgrade, meticulously engineered to provide a harmonious blend of power, efficiency, and an exhilarating exhaust note. This downpipe, tailored for discerning BMW enthusiasts, represents the perfect fusion of cutting-edge technology and driving pleasure.

Construction:

The ARM 6" B58 Catted Downpipe begins with a meticulously crafted 4.5" diameter precision CNC machined turbo V-band flange, ensuring a seamless match with the OEM turbo and upgraded turbos featuring an OEM flange. This precision-engineered design facilitates a rapid transition to the 6" OD high-flow catted section, optimizing exhaust flow and performance.

Noteworthy in its construction, the ARM 6" B58 Catted Downpipe is equipped with two O2 sensor bungs, strategically placed to facilitate the hassle-free reinstallation of OEM oxygen sensors. The pre-catalyst O2 sensor bung is positioned closer to the turbo, minimizing the risk of stretching O2 sensor wires during installation. For the post-catalyst O2 sensor bung, a built-in extension is provided, ensuring the sensor easily reaches the 6" section of the downpipe.

To ensure stability and reliability, the ARM 6" B58 Downpipe is securely fastened by a 2-bolt bracket, strategically utilizing the OEM downpipe mounting points. This robust mounting system enhances the overall durability and longevity of the downpipe, offering enthusiasts a high-quality and seamlessly integrated performance upgrade for their B58-powered vehicles.

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