- Description
- Fitment
- Refund Policy
MAD BMW S58 Resonated H-Pipe Midpipe – M3 M4 G80 G82 G83
Upgrade your BMW M3 or M4’s sound and flow with the MAD Resonated H-Pipe Midpipe, designed specifically for the S58-powered G80, G82, and G83 platforms.
This midpipe maintains the factory-style H-pipe configuration with two separate pipes merging through a crossover section, preserving the stock layout while enhancing performance. The OEM midpipe features two secondary catalytic converters and large resonators that restrict airflow and dull the exhaust tone. The MAD Resonated H-Pipe replaces those with a higher-flowing setup that eliminates the secondary flow restrictions and uses compact, carefully tuned resonators to refine the exhaust character.
The result is a noticeable increase in volume and tone without introducing excessive drone or harshness. It’s the ideal solution for drivers who want a deeper, more pronounced exhaust note while maintaining a smooth, refined sound throughout the RPM range.
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Factory-style dual midpipe H-pipe design
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Increased exhaust flow with clean, sporty tone
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Dual smaller resonators help reduce unwanted frequencies
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Direct bolt-on fitment to OEM or aftermarket components
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Constructed from high-grade stainless steel for durability
Fitment:
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2021+ BMW M3 G80 (Sedan)
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2021+ BMW M3 G81 (Touring)
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2021+ BMW M4 G82 (Coupe)
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2021+ BMW M4 G83 (Convertible)
Fits all S58-powered M3 and M4 variants, including rear-wheel drive and xDrive models.
What's Included:
- Full dual midpipe H-pipe assembly
- All required clamps and hardware for installation
- Requires cutting only if used with the stock axle back. No cutting needed when paired with the MAD axle back or any other compatible aftermarket axle back.
- Bolts up directly on the downpipe side with both the factory and any aftermarket downpipes.
This product is intended for off-road or competition use only where emissions compliance is not required. Always check local laws and regulations before installing aftermarket exhaust components.
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.
