Description
*WILL NOT FIT G-CHASSIS BMW M340i/M440i*
Upgrade your BMW's performance with the ARM Motorsports 6" B58 Catted Downpipe. If you own a BMW 240i, 340i, 440i, 540i, 640i, or 740i equipped with the B58 engine, this is the ultimate performance enhancement you've been waiting for.
ARM Motorsports has a reputation for delivering high-quality aftermarket performance parts, and the 6" B58 Catted Downpipe is no exception. This downpipe is precision-engineered to optimize the airflow within your BMW's exhaust system, resulting in significant performance gains.
What can you expect from this upgrade? Improved horsepower and torque are the most noticeable benefits. You'll experience quicker acceleration and a more responsive throttle, making your BMW even more exhilarating to drive. Whether you're cruising on the highway or tackling winding roads, the increased power will put a smile on your face.
But the enhancements don't stop there. The ARM Motorsports 6" B58 Catted Downpipe also delivers an enhanced exhaust sound. It adds a deeper and more aggressive tone to your BMW's exhaust note, making your car sound as sporty as it feels. It's the perfect complement to the increased performance, creating a symphony of power as you push your BMW to its limits.
Upgrade your BMW 240i, 340i, 440i, 540i, 640i, or 740i with the ARM Motorsports 6" B58 Catted Downpipe and experience the perfect fusion of performance and sound. Whether you're a performance enthusiast or simply looking to take your daily drive to the next level, trust ARM Motorsports to provide the upgrades that ignite your passion for driving. Make your BMW truly exceptional with this outstanding catted downpipe.
HIGHLIGHTS
• 6" 200 Cell High-Flow Catalyst
• Improved Exhaust Sound
• Faster Turbo Spool
• Stage 2+ Tune Compatibility
PROFILE
The ARM 6" B58 Catted Downpipe is perfect if you're looking for all of the performance of a Catless B58 Downpipe without the odor associated with increased emissions. Our B58 Catted Downpipe design incorporates a 6" high-flow 200 cell ceramic catalytic converter, making it a standout choice for those seeking power without while reducing emissions. The increased volume and improved turbo spool that from the catless variations are still present in our 6" B58 Catted Downpipe.
B58 6in Downpipe
The ARM 6" Catted B58 Downpipe replaces the restrictive factory downpipe with a 200 cell catalyst with a 6" diameter that significantly improves exhaust flow. This upgrade unlocks additional power and torque while reducing emissions compared to a full catless B58 downpipe, allowing you to safely run Stage 2+ tunes and enjoy a more vibrant sound from your B58-powered BMW.
ENHANCE THE SOUND OF YOUR B58
The ARM 6" B58 Catted Downpipe amplifies the overall volume of your B58's exhaust, bringing out the burbles and enhancing the audible presence of the turbo spool, even on the OEM tune
ONSTRUCTION
The ARM 6" B58 Catted Downpipe starts with a 4.5" diameter precision CNC machined turbo V-band flange which matches up perfectly to the OEM turbo or upgraded turbo with an OEM flange. It then rapidly transitions to the 6" OD high-flow catted section.
B58 Downpipe
The ARM 6" B58 Catted Downpipe features two O2 sensor bungs to allow for reinstallation of the OEM oxygen sensors. The pre-catalyst O2 sensor bung is located closer to the turbo on the ARM 6" B58 Downpipe to avoid stretching the O2 sensor wires during installation. The post-catalyst O2 sensor bung comes with a built-in extension to allow the sensor to reach around the 6" section of the downpipe.
The ARM 6" B58 Downpipe then reduces to the OEM size to allow it to connect to the OEM midpipe or the ARM B58 Midpipe Upgrade. The flex section is incorporated into the ARM 6" B58 Downpipe to relieve stress on the turbo during aggressive driving.
IN THE BOX
• ARM 6" B58 Downpipe
FITMENT GUIDE
Make Model Submodel Engine
BMW F22 M240i B58 3.0L
BMW F22 M240i xDrive B58 3.0L
BMW F23 M240i B58 3.0L
BMW F23 M240i xDrive B58 3.0L
BMW F30 340i B58 3.0L
BMW F30 340i xDrive B58 3.0L
BMW F32 440i B58 3.0L
BMW F32 440i xDrive B58 3.0L
BMW F33 440i B58 3.0L
BMW F33 440i xDrive B58 3.0L
BMW F34 340i xDrive B58 3.0L
BMW F36 440i B58 3.0L
BMW F36 440i xDrive B58 3.0L
BMW G30 540i B58 3.0L
BMW G30 540i xDrive B58 3.0L
BMW G32 640i B58 3.0L
BMW G32 640i xDrive B58 3.0L
BMW G12 740i B58 3.0L
BMW G12 740i xDrive B58 3.0L
BMW G15 840i B58 3.0L
BMW G15 840i xDrive B58 3.0L
