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ARM Motorsports

Dual Exit Race Exhaust for BMW B58 3.25" T304 Stainless

$447.00 $397.00 Save $50.00

SKU: 240TRK

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ARM Motorsports Dual Exit Race Exhaust is an axle-back exhaust system for the BMW B58 engine. It is constructed from T304 stainless steel with mandrel-bent curves and features a 3.25" piping diameter.
Show original supplier description
The ARM Motorsports M240i Dual Exit Race Exhaust is a performance axle-back exhaust system designed for the BMW B58 engine, representing a significant upgrade for enthusiasts seeking an aggressive sound and weight reduction. This system replaces the factory muffler and resonators with a full straight-pipe design, delivering a raw and loud exhaust note. The dual-exit configuration provides a distinct visual and auditory experience, with tips exiting on both sides of the vehicle. Its 3.25" piping diameter maximizes gas velocity and volume, complementing the B58 engine's performance. The system is engineered for a direct fit, utilizing OEM hangers and requiring zero cutting or trimming for installation, which can typically be completed in about 45 minutes with basic tools. This design also allows for an easy swap back to the stock muffler if desired. Installation of this exhaust requires the ARM M240i Midpipe upgrade to connect properly. The system is compatible with various BMW models including the F22 M240i, F22 M240i xDrive, F23 M240i, F23 M240i xDrive, F30 340i, F30 340i xDrive, F30 M340i, F30 M340i xDrive, F32 440i, and F32 440i xDrive. For F3X 340i/440i models, this exhaust will only fit with the M-Sport bumper, not the base trim bumper. Please note that this product is intended for Off-Road Use Only.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandARM Motorsports
Part Number240TRK
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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