MAD Axleback Exhaust - BMW / G2X / M340i / M440i
Shipping & Returns
Shipping & Returns
How is shipping calculated?
Shipping cost is based on weight and size. Just add products to your cart and use the shipping estimate tool before checkout to see an accurate shipping cost to your address!
What is your return policy?
We do accept returns. Please email us at info@broxtuning.ca to submit your request. Items sent to us without submitting a request will not be accepted.
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return. Customer service is at the top of our values here at Brox Tuning and we try our best to make the return process painless for our customers. If you need more info please click here for our detailed return policy.
When will my order ship?
Once an order is placed, if the item is in stock we will have it shipped out within 1 business day. Out of stock items usually ship within 1-2 weeks. Please email us if you have any questions regarding inventory at sales@broxtuning.ca.
Do you ship worldwide?
We only ship to Canada & USA.
Price Match
Price Match
If you're shopping for parts and want to make sure you get the best price before you order, give Brox Tuning the opportunity to earn your business. Call us at (416) 798-BROX or email us at sales@broxtuning.ca with the required info below:
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Local Pick Up
Local Pick Up
If you are local to our physical location you have the ability to choose the "local pick up" option at checkout! This means you can come and get your items once they are available for pick up avoiding shipping costs. In stock items are usually ready within 1-3 hours. Out of stock items will need 1-2 weeks. Get in touch with us if you have questions about stock levels at sales@broxtuning.ca or call us at (416) 798-BROX
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Description
Description
The MAD BMW M340 M440 Axle Back Exhaust System is designed to deliver a bold sound upgrade without unnecessary parts or added cost. On this platform, a full catback is simply not needed. The factory midpipe is already a single design and is completely non-restrictive, with no cats and no resonators. Replacing it with another single midpipe offers no real performance or sound benefit, so this system focuses where it actually matters: the axle back.
This axle back setup dramatically improves sound and character while keeping the factory midpipe in place, making it a smarter and more efficient upgrade. It gives the car a deeper, more aggressive tone when pushed, while staying refined and comfortable during normal driving.
The system includes three tip options. Available finishes are brushed stainless, black, or carbon, allowing you to tailor the look to your build.
Installation is quick and straightforward. As with most axle back systems, cutting the factory pipe is required. The process is very simple, takes minimal time, and the provided clamps make installation clean and secure.
The exhaust is constructed from high-quality 304L stainless steel for excellent durability and long-term corrosion resistance.
An upgraded dual valve configuration converts the factory single valve setup into a true dual valve system similar to M models. The factory valve actuator is reused, with an additional valve added on the opposite side. This allows the exhaust to function perfectly with OEM drive modes, staying quiet in Comfort and opening up fully in Sport.
This axle back is ideal for drivers who want a noticeable sound upgrade, strong presence, and clean fitment without paying for parts that do not add value.
Features:
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Slip on axle back design for BMW M340i and M440i.
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Dramatic sound improvement while keeping factory midpipe in place.
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Included extra Valve motor and harness for a true dual M-style exhaust valve control.
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Retains OEM drive modes: quiet in Comfort, fully open in Sport.
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Three tip options: brushed stainless, black, or carbon.
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Constructed from premium 304L stainless steel for corrosion resistance and longevity.
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Quick and straightforward installation with included clamps.
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No unnecessary components, making it a cost-effective, value-focused upgrade.
Payment & Security
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