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Active Autowerke Signature Single Mid-Pipe BMW G80 / G82 M4

SKU: 11-095
Price
$1,199.00
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested.

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product Description

The Active Autowerke Signature Single Mid-Pipe for the BMW G80 M3 & G82 M4 is a race-oriented mid-section exhaust upgrade engineered to unlock the true acoustic character of the S58 engine. By replacing the restrictive stock mid-pipe with a high-flow, brushed 304 stainless steel design, this mid-pipe restores the deep, aggressive “M-car” growl that’s muted from the factory while improving exhaust flow and throttle response. It pairs seamlessly with most aftermarket exhausts and allows for the easy reinstatement of the stock mid-pipe if needed, giving enthusiasts powerful performance evolution without permanent modification.

Fitment Notes

  • Designed specifically for BMW G80 M3 & G82 M4 vehicles (S58 twin-turbo engine platform). 

  • Race and off-road use only — this product requires a signed “Off-Road Use Only” waiver and is not certified for street emissions compliance in many regions.

  • Requires cutting the factory mid-pipe for installation; stock mid-pipe can be reinstalled if desired. 

  • Works with factory and most aftermarket exhaust systems and mufflers that use factory-style flanges and clamps.

Included

  • Active Autowerke Signature Single Mid-Pipe assembly with G-brace support. 

  • Factory-style flanges and clamps for direct connection to stock or aftermarket exhaust components.

  • One-year industry standard warranty against rust and manufacturing defects.

Product Specs

  • Material: 100 % brushed 304 stainless steel construction — corrosion-resistant and durable for high-temperature exhaust environments.

  • Design: Single-pipe mid-section engineered for maximum flow and deeper sound, without secondary cats or resonators (resonator optional upgrade available). 

  • Installation: Requires single cut of stock mid-pipe, with provisions for reinstallation if needed. 

  • Warranty: One-year rust-through / defect warranty.

  • Fitment Range: BMW G80 M3 / G82 M4 (S58 engine) with compatible exhaust configurations.

Product Features

  • Improve Flow & Sound Character: Opens the mid-section of the exhaust to reduce back-pressure and reveal a deeper, richer BMW S-series tone — especially noticeable under throttle and during deceleration. 

  • Premium Stainless Construction: Brushed 304 stainless steel offers durability and long-term resistance to heat and corrosion, ideal for both street builds and track days. 

  • Direct-Fit Bolt-On Upgrade: Uses factory-style fittings and clamps for straightforward installation; compatible with stock rear exhaust or aftermarket mufflers. 

  • Increased Throttle Response: By restoring more efficient exhaust flow earlier in the system, the mid-pipe helps the S58 engine respond more crisply at part- and full-throttle. 

  • Richer, Deeper Exhaust Note: The single mid-pipe design mixes exhaust pulses earlier, creating a noticeable sound evolution compared to the factory section. 

  • Modular Performance Path: Works with downpipes, valved rear sections, or full exhaust upgrades — allowing staged performance enhancements without replacing the entire system.