- Description
- Fitment
- Refund Policy
The Eisenmann G8X M3 / M4 Performance Exhaust System - Valved was developed with the same obsessive attention to detail that defines BMW M’s latest generation of high-performance vehicles. From the moment the G8X M3 and M4 platforms were introduced, it became clear that BMW approached every aspect of the chassis, drivetrain, and driving experience with uncompromising engineering precision. Eisenmann responded with the same philosophy, developing an exhaust system that would complement the G8X platform at the highest possible level.
Rather than simply adapting a universal muffler design, Eisenmann engineered every component of the system specifically for the G8X chassis and S58 powerplant. Each exhaust system is constructed from high-grade 304 stainless steel with carefully optimized wall thickness throughout the system to achieve the ideal balance between weight reduction, durability, and acoustic performance.
The muffler canisters are machine-pressed using a series of deep-draw dies unique to Eisenmann, creating exceptional canister rigidity while contributing to the company’s signature exhaust tone. The canister shape was specifically engineered to eliminate visibility from the rear view of the vehicle, significantly improving the visual appearance of the G8X rear diffuser area.
Internally, multiple airflow paths work seamlessly with BMW’s factory Comfort, Sport, and Sport Plus drive modes, allowing the integrated valve control system to dramatically alter the exhaust character depending on driving conditions. During relaxed cruising, the system maintains a refined and controlled tone, while aggressive throttle input transforms the S58 into a deep and aggressive soundtrack worthy of BMW M’s flagship performance sedan and coupe platforms.
The Eisenmann Heritage exhaust system is available as either a rear section or complete exhaust system, allowing owners to tailor the system to their desired sound level and future modification plans. The complete system replaces everything from the exhaust tips rearward from the factory downpipes, creating a true bolt-on solution with improved flow capacity and reduced restriction for higher-performance applications.
For enthusiasts seeking additional visual distinction, Eisenmann’s massive 110mm LeMans-style tips feature a unique side cut-out design showcasing the Eisenmann signature logo. An optional Black Series finish is also available, featuring a high-temperature ceramic coating engineered to improve heat dissipation and corrosion resistance while delivering a stealth-inspired appearance.
Eisenmann has been handcrafting exhaust systems in Germany for over 30 years and serves as an OE supplier to some of the world’s leading automotive manufacturers. That experience is reflected in the quality, sound, and finish of every Eisenmann performance exhaust system.
Product Details
- Designed for the BMW G8X M3 and M4
- Retains factory electronic valve control
- Available as rear section or complete exhaust system
- Handmade in Germany
- Constructed from 100% stainless steel
- Engineered specifically for the BMW S58 platform
- Available with Eisenmann 110mm LeMans-style exhaust tips
- Optional Black Series ceramic coating available
Vehicle Applications
Available Configurations
- SKU: B5470.01104.31 - G8X M3/M4 Performance Exhaust System - Valved
- SKU: B5470.01104.32 - G8X M3/M4 Performance Exhaust System - Valved
- SKU: B5470.01104.CSS - G8X M3/M4 Performance Exhaust System - Valved
Related Products
Notes
- Professional installation is recommended
- View emissions compliance notice
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
