Deep Tone Industries BMW G80/G81 M3 & G82/G83 M4 Non-Resonated Wide Single Midpipe With Brace (2021+)

The DeepTone Industries non-resonated single midpipe with brace for the BMW G80/G81 M3 and G82/G83 M4 represents one of the most established and effective mid-section layouts available for the S58 platform. This is a classic configuration for a reason: it delivers consistent flow, a deeper and more cohesive exhaust tone, and proven capability on high-output builds, all while remaining well-suited to daily driving.

By merging exhaust gases into a single, centralised flow path, this midpipe improves exhaust gas velocity and pressure consistency through the centre of the system. The result is a mid-section that responds cleanly under load and remains composed at cruising speeds.

Manufactured from stainless steel for durability and long-term resistance to heat and corrosion, this midpipe is designed to support significant power levels while maintaining predictable sound behaviour. It’s a well-balanced choice for drivers who want a noticeable improvement in tone and response without sacrificing refinement, whether paired with the factory rear silencer or an aftermarket back box.

How a Single Midpipe Shapes Tone and Flow

Single midpipe layouts are widely recognised for their ability to smooth exhaust flow and enhance overall coherence. By combining both exhaust banks into a single path, pressure waves are stabilised, reducing turbulence and improving consistency across the rev range.

On the S58 engine, this translates to a deeper, more unified exhaust note with improved clarity under acceleration. At higher RPM, the tone opens up progressively, delivering a clean, purposeful character rather than abrupt volume spikes.

This design has been used successfully on numerous high-power applications, with flow capability comfortably supporting builds in excess of four-figure horsepower while remaining fully usable on the road.

Key Features

• Proven non-resonated single midpipe design for the BMW S58 engine

• Improves exhaust flow consistency and gas velocity

• Delivers a deeper, more controlled and refined exhaust tone
  

• Stainless steel construction for durability and corrosion resistance

• Integrated brace for added strength and long-term stability

• Suitable for high-output applications, including four-figure power builds

• Designed for on track use only

• Supplied with a 1 Year DeepTone Industries warranty

Compatibility

• BMW G80 M3 (2021+)

• BMW G81 M3 Touring (2021+)

• BMW G82 M4 (2021+)

• BMW G83 M4 Convertible (2021+)

• 3.0-litre S58 twin-turbo inline-six engines

Why Choose DeepTone Industries?

DeepTone Industries focuses exclusively on the part of the exhaust system that defines how a car sounds, feels, and responds. By concentrating on proven downpipe and midpipe designs, DeepTone delivers established exhaust layouts that improve tone and flow without unnecessary redesigns or inflated costs. Each product is refined through real-world use and backed by a 1 Year warranty for the original owner, offering confidence alongside strong value. It’s an approach built for drivers who want depth, balance, and consistency rather than volume alone.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.