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  • MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless
MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless
MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless
MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless
MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless
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Load image into Gallery viewer, MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless
Load image into Gallery viewer, MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless

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MAD BMW B58 2025+ Gen 3 M340 M440 4.5" Downpipe Catless

EuroKlasse INC
MAD-126
$259.00
$259.00
customers are viewing this product
Description

Enhance your BMW's performance with the MAD BMW B58 Gen 3 Catless Downpipe, specifically engineered for the 2025+ BMW M340 & M440. Crafted from premium 304 stainless steel, this 4.5-inch downpipe guarantees optimal exhaust flow, durability, and resistance to corrosion, providing the absolute best quality and longevity.

By eliminating restrictive factory catalytic converters, the MAD catless downpipe significantly boosts horsepower, sharpens throttle response, and reduces turbo lag, delivering an exhilarating driving experience. Precision-engineered welds and exact fitment ensure a seamless, bolt-on installation without hassles or modifications.

Enjoy an aggressive, sporty exhaust note and unparalleled performance gains. The MAD downpipe is a must-have upgrade for both daily-driven enthusiasts and track-focused drivers seeking to unlock their BMW’s full potential.

Features:

  • High-grade 304 stainless steel for unmatched quality and durability

  • 4.5-inch piping diameter for improved exhaust flow and performance

  • Significant boost in horsepower and torque

  • Enhanced throttle response and reduced turbo lag

  • Aggressive, deep, and sporty exhaust tone

  • Easy direct bolt-on installation

Upgrade to MAD quality—experience superior performance, unmatched reliability, and thrilling sound for your 2025+ BMW M340 & M440.

 

Fitment:

Does not fit euro models (check downpipe flange design before ordering)

2025+ BMW M340

2025+ BMW M440

2025+ BMW X3 G45 M50

2025+ BMW X4 G46 M50

 

Emissions Disclaimer:
This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.

By purchasing this product, you acknowledge and agree that:

  • You are responsible for compliance with all applicable emissions laws and regulations.

  • MAD and its affiliates disclaim any liability for improper or unlawful use of this product.

  • Use of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.

Please check your local laws before purchase and installation.

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We have a 10-day return policy, which means you have 10 days after receiving your item to request a return. Any return or cancellation will be 10% Fee. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at support@euroklasse.com. If your return is accepted, Items sent back to us without first requesting a return will not be accepted. You can always contact us for any return question at support@euroklasse.com. Damages and issues Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right. Exceptions / non-returnable items Certain types of items cannot be returned, like perishable goods, custom products (such as special orders or personalized items), We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on Sale/ Discounted items or gift cards Or . Exchanges The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. Refunds We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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