ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series
ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series
ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series
ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series
ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series
ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series
ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series

ARM Motorsports B58 Downpipe - F2X 2-Series | F3X 3-Series | F3X 4-Series

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HIGHLIGHTS

• Increase Power and Torque
• Faster Turbo Spool
• Improved Exhaust Sound
• Safely Flash Stage 2+ Tunes
• SS304 Stainless Steel
  

PROFILE


The ARM B58 Downpipe is one of the foundational upgrades for giving your B58-powered BMW more power, torque, and sound.  The stock B58 downpipe comes from the factory with a catalyst that severely restricts exhaust flow, causing excessive backpressure with increased boost.  Upgrading your downpipe unlocks power, improves turbo spool, allows you to safely run stage 2+ tuning, all while increasing the sound of your B58-powered BMW.   

ENHANCE THE SOUND OF YOUR B58

The ARM B58 Downpipe will increase the overall volume of your BMW, open up the exhaust burbles even on OEM programming, and make the turbo spool significantly more audible.  The M240i in the video below is only equipped with the ARM B58 Downpipe, it is otherwise on a 100% stock exhaust. The car has never been flashed, it is on the original DME programming from BMW.  

Please contact us via the contact page form to start a return or exchange. The return/exchange process must be started within 1 week of delivery, after 1 week we will not be able to issue a refund/exchange. A 20% restocking fee will be applied to any return once the order has been shipped. For any questions regarding returns or exchanges feel free to contact us at sales@horizonmotorsport.com or reach out to us via the contact form and we would be happy to help.

You can find additional details on our return and exchange policy here.

 

 

OUR GOAL

Horizon Motorsport has one goal: to make our clients happy. We aim to provide the highest level of customer service and the highest caliber parts, all at the most competitive prices. Have a question or concern about a product we sell? Send us an email at sales@horizonmotorsport.com.

QUALITY is KEY

Every piece of carbon fiber that leaves our location in Los Angeles, CA is quality checked extensively prior to shipment. Every piece is backed up by our fitment and finish guarantee.

THE BEST CUSTOMER SERVICE

At Horizon Motorsport our mission is to provide unparalleled customer service. As a small business we pride ourselves on creating long lasting relationships with our customers who know that they can count on us for any of their BMW needs.

A COMPANY OWNED BY ENTHUSIASTS

Horizon Motorsport was founded in 2019 in Los Angeles, CA by fellow BMW enthusiasts. We have experience with nearly all makes and models and have been actively involved in the Southern California BMW scene for over 3 years. Because of our unique insight into the BMW community, we choose to carry only the highest quality parts from the highest quality brands on the market.