SKU: 46861922953

MAD US M340 M440 Catback Exhaust (G20 & G22)

Sale price$679.05 Regular price$754.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

MAD US M340 M440 Catback Exhaust (G20 & G22)The MAD BMW M340 M440 catback exhaust system is a statement in refined power and acoustics. Engineered with meticulous attention to detail, this exhaust system redefines the sound and performance of your BMW M340 or M440. One of the standout features of this exhaust system is that it reuses the stock tips, providing a seamless integration with the aesthetics of your BMW. The system is a full catback, designed to offer the richest sound possible,

The MAD BMW M340 M440 catback exhaust system is a statement in refined power and acoustics. Engineered with meticulous attention to detail, this exhaust system redefines the sound and performance of your BMW M340 or M440.    

One of the standout features of this exhaust system is that it reuses the stock tips, providing a seamless integration with the aesthetics of your BMW. The system is a full catback, designed to offer the richest sound possible, turning every drive into an exhilarating experience.

Installation is a breeze with no cutting required. This system is 100% plug and play, making it a completely reversible modification if you ever wish to return to the stock exhaust.

Constructed entirely from 304 stainless steel, this exhaust system is as durable as it is striking. The larger diameter piping enhances the flow, promoting superior performance and a sportier, more enjoyable sound.

The stock exhaust valve actuator is repurposed and an additional valve/actuator is integrated on the opposing side to ensure even flow, regardless of the valve position. The computer-controlled exhaust valves are retained to limit noise during low speed driving while fully opening under high-load conditions, ensuring the perfect balance between sound and performance.

Included with the exhaust system is easy-to-follow, bolt-on installation hardware. This makes the MAD BMW M340 M440 catback exhaust system a transformative addition to your vehicle that is not only impactful in performance, but also simple to implement.

  • Reuses the stock tips for seamless integration with your BMW's aesthetic
  • Full catback design for optimal sound performance
  • Requires no cutting, offering a 100% plug and play installation
  • Completely reversible modification
  • Constructed entirely from 304 stainless steel for superior durability
  • Larger diameter piping for increased flow and performance
  • Repurposes stock exhaust valve actuator and adds an additional valve/actuator on the opposing side to ensure even flow
  • Retains computer-controlled exhaust valves to balance sound and performance
  • Comes with easy-to-follow, bolt-on installation hardware
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 46861922953

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Dan
Whiting, US
★★★★★ 3
Great formula, but desperate for an unflavored option
Flavor Name: Berry, Size: 30 Servings (8.0 Ounce) (Pack of 1)
I’ve been incorporating Thorne’s Amino Complex into my daily stack, and from a nutritional standpoint, it’s hard to beat. The clinical dosing of essential amino acids is exactly what I’m looking for to support my recovery and fitness goals. Thorne is usually my go-to for purity and quality, and this product is no exception when it comes to the actual ingredients. ​However, the flavor profile is a significant drawback. To be blunt: the flavors are just not good. They feel chemically and overly sweet, which makes it a chore to drink rather than a supplement I look forward to. ​I would much prefer an unflavored and unsweetened version. Having the option to just mix the raw powders into water or my own beverage without the unnecessary flavorings and sweeteners would be a game-changer. If you’re sensitive to artificial tastes or just prefer a "cleaner" experience, the current options might be a struggle. ​Pros: ​High-quality amino acid profile. ​Trusted brand with great sourcing. ​Cons: ​Flavors are unpleasant and too sweet. ​No "naked" or unflavored option available.
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Reviewed in the United States on February 18, 2026
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Adrienne
Waukegan, US
★★★★★ 5
Taste and Quality are Excellent!
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
Thorne has a reputation for high quality products so I thought I’d try this whey protein. It tastes really good! I find it easy to digest, and it dissolves easily. I plan to make this my go-to whey protein.
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Reviewed in the United States on May 19, 2026
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Nina Miller
Pawtucket, US
★★★★★ 5
Definitely sweet but good mixed
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
The vanilla would be too sweet on it's own for me but with strawberries and spinach it's perfect.
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Reviewed in the United States on February 15, 2025
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Lakerat
Alexandria, US
★★★★★ 1
Horribly ‘weird’ sweet flavor
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
Horrible taste - synthetic sweetness than destroys my shakes. I bought Thorne because of its high quality but this is one of their products that won’t work for me. I’m struggling through the jar because it’s too expensive to waste. Using cacao powder, cinnamon & cardamom to try to tone down the overwhelming ‘sweet.’
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Reviewed in the United States on May 18, 2026
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Bill
Alexandria, US
★★★★★ 5
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Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
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