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ARM Motorsports BMW Exhaust Parts, Mufflers & Catalytic Converters

Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.

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ARM Motorsports Upgraded Midpipe - BMW F3X 340/440 B58 3.0L
ARM Motorsports Upgraded Midpipe - BMW F3X 340/440 B58 3.0L
ARM Motorsports - Corporate Logo
T#:35087383
Part#: B58MID3
In Stock
Sale - Save 10% $ 547.00

This product was last offered at the strikethrough price on
08-11-2026

$ 492.30 USD
Free Shipping
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Sale - Save 10%
$ 547.00

This product was last offered at the strikethrough price on
08-11-2026

$ 492.30 USD
Free Shipping
Add to Wish List
The ARM 340i Midpipe elevates the sound of your B58, delivering the aggressive exhaust note you've been looking for in a tuned B58-powered BMW. Engineered to boost both power and sound, this midpipe eliminates the two central resonators found in the stock 340i setup. Retaining the OEM muffler allows you to control the exhaust volume—engage Sport Plus mode to unleash the full roar of the upgraded B58, or switch to Comfort mode for a quieter drive through the neighborhood.
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ARM Motorsports Dual Exit Axle-Back Race Exhaust - BMW F22/23 M240i
ARM Motorsports Dual Exit Axle-Back Race Exhaust - BMW F22/23 M240i ...
ARM Motorsports - Corporate Logo
T#:46478580
Part#: 240TRK-D
In Stock
$ 397.00

This product was last offered at the strikethrough price on
07-23-2026

$ 355.99 USD
Limited Qty Sale
Free Shipping
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$ 397.00

This product was last offered at the strikethrough price on
07-23-2026

$ 355.99 USD
Limited Qty Sale
Free Shipping
Add to Wish List
The ARM M240i Dual Exit Exhaust is the final step in your M240i exhaust modifications. This is for the all-in M240i enthusiast, seeking the lightest and loudest exhaust available. You will see significant weight savings and an engine note that SCREAMS. This Dual Exit design is a spin-off of our single exit exhaust, designed for people who want tips coming out of both sides of their M240i.
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