S58 CROSSOVER PIPE - G80 M3 G82/G83 M4
S58 CROSSOVER PIPE - G80 M3 G82/G83 M4
S58 CROSSOVER PIPE - G80 M3 G82/G83 M4
S58 CROSSOVER PIPE - G80 M3 G82/G83 M4
S58 CROSSOVER PIPE - G80 M3 G82/G83 M4
S58 CROSSOVER PIPE - G80 M3 G82/G83 M4
S58 CROSSOVER PIPE - G80 M3 G82/G83 M4

S58 CROSSOVER PIPE - G80 M3 G82/G83 M4

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• Exotic Exhaust Sound
• Precision Laser Cut Flanges
• Fits OEM and Upgraded Midpipes
• SS304 Stainless Steel
• 4lbs Lighter Than OEM


The ARM S58 Crossover Pipe is designed to replace the restrictive OEM S58 crossover pipe with a fully round design to improve exhaust flow.  The ARM S58 Crossover Pipe retains a round form, eradicating the turbulence and constraints of the OEM oval design. Upgrading your S58 with the ARM Crossover Pipe results in increased exhaust flow for your G80/G82 BMW.


The ARM S58 Crossover Pipe removes the extra casting material and sound deadening of the OEM S58 crossover pipe, allowing an increase in sound your S58 produces.  The G82 M4 in the video below is equipped with the ARM S58 Midpipe, S58 Crossover Pipe, and ARM S58 Downpipes, providing an increase in volume over the OEM setup.  Pairing the ARM S58 Midpipes with the ARM S58 Downpipes will increase the overall volume of your S58 significantly more than the ARM S58 Crossover Pipe alone.  


The ARM S58 Crossover Pipe is built with SS304 stainless steel and is completely round.  The ARM S58 Crossover Pipe starts at the end of the left downpipe utilizing and OEM style 2 bolt flange and crosses over the underbody to the driver side midpipe connection.  The flange on the midpipe side of the ARM S58 Crossover Pipe is designed to accommodate the midpipe gasket perfectly.

S58 Crossover Pipe

The ARM S58 Crossover Pipe is designed to work with ARM S58 Downpipes and ARM S58 Midpipes, but is also compatible with the OEM downpipes and midpipes or upgraded downpipes and midpipes that utilize OEM style connections.

S58 Crossover Pipe


• 1x ARM S58 Crossover Pipe
• 2x Mounting Bolts/Nuts



Make Model Submodel Engine
BMW G80 M3 S58 3.0L
BMW G80 M3 Competition xDrive S58 3.0L
BMW G82 M4 S58 3.0L
BMW G82 M4 Competition xDrive S58 3.0L
BMW G83 M4 S58 3.0L
BMW G83 M4 Competition xDrive S58 3.0L


Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.

This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.

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.


Orders typically ship in 1-2 business days from our location in Los Angeles, CA. Transit time usually ranges from 3-5 business days, depending on where you are located. We offer worldwide shipping, if you need live outside of North America, shoot us an email and we would be happy to give you a quote!

Creating life-long customers.

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. At Horizon Motorsport our mission is to provide a unparalleled customer experience to keep our customers coming back.

A Company Owned By Fellow 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. Our unique insight and experience with the BMW community and other high end European-oriented brands gives us the knowledge and ability to stock only the highest quality parts from the highest quality brands.