TruCrane Motorsports  |  SKU: S58MID-3

ARM Motorsports 4.5" Single Midpipe BMW M3 M4 G80/G82/G87 S58

$84700 $99700
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Genuine Parts

HIGHLIGHTS

• Exotic Exhaust Sound
• Massive 4.5" Design
• SS304 Stainless Steel
• Saves 15lbs Over OEM
  

PROFILE


The ARM S58 4.5" Single Midpipe upgrade is designed to unleash the incredible exhaust sounds from your G8X M3/M4. By removing the secondary catalysts and two middle resonators, the ARM S58 Single Midpipe substantially improves the sound of your S58-powered BMW.  Also, by retaining the OEM muffler, you still have the ability to control the exhaust valves, allowing you to close them for a more subtle tone for when you want to be quiet, or open the valves for maximum sound.


ENHANCE THE SOUND OF YOUR S58

The ARM S58 4.5" Single Midpipe will not only increase the overall volume of your exhaust but also transform the sound into something truly unique from an ordinary G80 M3.  It will also make the exhaust burbles more audible even with OEM tuning.  The G82 M4 in the video below is equipped with both the ARM S58 Single Midpipe and ARM S58 Downpipes.  Pairing the ARM S58 Single Midpipe with the ARM S58 Downpipes will increase the overall volume of your S58 even more than the S58 Single Midpipe alone.  


CONSTRUCTION

The ARM S58 Midpipe is a 4.5" design from the downpipe connection all the way to the rear section where it will reduce to 2.75" to perfectly connect to the OEM muffler section.  The ARM S58 Single Midpipe starts with an OEM-style 2-Bolt flange which can mate up to either the OEM downpipes, or upgraded downpipes that fit the OEM exhaust.  These flanges will accommodate the OEM midpipe gasket perfectly. 


The ARM S58 Single Midpipe then transitions to the 4.5" Midpipe section of the exhaust via the slip-fit connections.  Where the exhaust merges is the heart of the ARM S58 Single Midpipe.  You have the 4.5" Single Midpipe section, this is where the magic happens.  The sound waves of each bank of your S58 engine are combined to produce a much deeper and richer exhaust note.


From the middle midpipe section, the ARM S58 4.5" Single Midpipe transitions back to the OEM muffler, which allows full use of the OEM exhaust valves.  This gives you the freedom to choose between open and closed exhaust flaps, allowing you to control the volume your G80 M3/M4 produces.  Upgrade the look of your G8X to match the sound of your ARM S58 Midpipe by completing the kit with a set of ARM S58 Exhaust Tips. 

S58 Midpipes ARM



The ARM S58 Midpipe will secure to the exhaust hanger on the passenger's side using the OEM style mounting bracket. This helps the exhaust secure during aggressive driving.

AXLE BACK ADAPTERS

The ARM S58 Axle Back Adapters are designed to reduce down at the end of the midpipe to fit most aftermarket axle back systems. Most aftermarket axle back systems reduce down from 3" (76mm) to 2.75" (70mm) and that's where the ARM S58 Axle Back Adapters join the two separate components.


IN THE BOX

• 2x ARM Downpipe Gaskets
• 1x ARM Extended Brace
• 2x Front 4.5" Midpipe Sections
• 2x Rear Exhaust Sections
• 5x ARM Clamps

FITMENT GUIDE

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
 

Shipping & Returns

Some items will ship directly from the manufacturer or distributor. We will process your order as soon as we can, to ensure minimal delay. Please note that sometimes our inventory system may show an item in stock, while the item is out of stock with the manufacturer or distributor. Should this happen, we'll contact the manufacturer to get a best estimate of when the item will ship out and reach out to you regarding next steps. 

Please note that if the item is dropped shipped, the manufacturer may change the shipping carrier beyond our control. We will do our best to ensure you receive the same carrier and shipping time as purchased through us.

For international orders the buyer is responsible for any import duties or tariffs. This includes items shipped from abroad to you, such as KW, PTB

 Items that show delivery status as "Delivered" that are Lost or Stolen Are Customers Responsibility.

You must reach out to us directly for all returns. If the product is unused and uninstalled, we can offer you a refund, or exchange. Returns must be initiated within 30 days(TCM Products have 60 days) of the product being ordered. Once the return has been approved, it is up to you to pack and return the product to the address provided. Return shipping costs are the buyers responsibility. Returns are subject to a 20% restocking fee. Items must be in like new condition.

Fuel items: we cannot accept returns on used fuel systems. This includes, HPFP & LPFP fuel pumps, port injection rails and ethanol analyzer kits.

Please note special order items or items that are built to order, once the item is in production the order cannot be cancelled or returned. Some examples of these products are Clutch Kits, Turbo charger kits, any ApexBuilt Product. If you are unsure if your product would be a special order item, please reach out to us. Contact US 

TruCrane Motorsports(TruCrane Motorsports LLC) is not responsible for any products lost or damaged during the return shipping process.

Cancellations

Cancellations on orders of $1000 paid for using Shopify Pay Installments/Affirm are subject to a 3% cancelation fee. This is due to the large order processing fee associated with these sort of payments. TruCrane Motorsports, will cover the additional fees. 

Cancellations on orders over $2000 paid for using Shop Pay, Credit Card, or PayPal are subject to a 2% cancelation fee. 


Any purchase on our website constitutes acceptance of these conditions.

Warranty

Terms and Conditions of TCM Products that state Lifetime Warranty on their product page. These products have a lifetime warranty against manufacture defects.

This covers things like cracks, and weld failures. 

The warranty also does not cover:

- wear items, such as replacing a filter due to age.

- It does not cover dents, scratches, or holes from road debris.

- Improper install; rubbing against something or other issues from faulty installation. 

- finishes, so if the finish wears, fades or chips off over time.

- catalytic converter blow out or damaged due to burbles/pop and crackle tunes.

 

If your item arrives damaged, please email us immediately along with photos of the product, damage and the shipping box. 

FAQs

Questions? Check out or full FAQs here.

Payment methods

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Shipping Notice

Icon of a truck with a check mark, indicating delivery or verification.

Some oversized, heavy, or specialty items may incur additional shipping charges based on your delivery location. If this applies to your order, our team will contact you after checkout with the updated cost. Orders will not ship until additional charges are confirmed and paid.

ARM Motorsports 4.5" Single Midpipe BMW M3 M4 G80/G82/G87 S58

TruCrane Motorsports

We are a specialty parts provider and performance shop based out of the Washington, DC area. We have been heavily involved in the car scene of DC, Maryland, & Virginia for well over a decade, including working with the SCCA, and multiple local car clubs and our local racetracks. TruCrane Motorsports specializes in aftermarket support for BMWs but we offer services for all cars. 

At TruCrane Motorsports you'll find a level of customer service and support, beyond that of any other shop.

We have grown from selling parts and performing installations and maintenance, to also providing our own product line, TCM. TCM is the shop brand for TruCrane Motorsports. We took the same principles of our shop and applied them to our brand. That is why all TCM products have a fitment guarantee and lifetime warranty. We offer competitive pricing, to ensure you're not overpaying for a part.

We strive to provide quality products at a cost effective price. 

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