SKU: 10775718870

MAD BMW Toyota B58 Fat Boy 5" Catless Downpipe M240 340 440 Supra

Sale price$200.97 Regular price$223.30
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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

MAD BMW Toyota B58 Fat Boy 5" Catless Downpipe M240 340 440 SupraMeet the MAD B58 Fat Boy 5'' catless downpipe. The MAD 5 inch Catless B58 Downpipe is a high performance aftermarket upgrade for BMW B58 engine vehicles, designed to increase power and torque while improving exhaust flow. This downpipe is made from premium quality stainless steel and is precision engineered to fit perfectly with the stock exhaust system, ensuring a seamless installation process. With a 5 inch diameter, this downpipe provides

 

Meet the MAD B58 Fat Boy 5'' catless downpipe.

The MAD 5 inch Catless B58 Downpipe is a high-performance aftermarket upgrade for BMW B58 engine vehicles, designed to increase power and torque while improving exhaust flow. This downpipe is made from premium quality stainless steel and is precision-engineered to fit perfectly with the stock exhaust system, ensuring a seamless installation process.

With a 5 inch diameter, this downpipe provides unrestricted exhaust flow, which reduces backpressure and increases horsepower and torque output. It also features a catless design, which eliminates the factory catalytic converter for even more performance gains. This makes it an ideal choice for car enthusiasts who are looking to improve the performance and sound of their BMW B58 engine vehicles.

The MAD 5 inch Catless B58 Downpipe is designed to withstand the high temperatures and pressures of high-performance driving, ensuring reliable performance for years to come. 

Installation of the MAD 5 inch Catless B58 Downpipe is straightforward and can be completed with basic hand tools.

Overall, if you're looking to improve the performance and sound of your BMW B58 engine vehicle, the MAD 5 inch Catless B58 Downpipe is a must-have upgrade. It delivers significant performance gains while also adding a much needed sound improvment.

Expect up to a 30HP increase on a tuned BMW / Toyota Supra B58 with stock turbo, even more on cars with upgraded turbo.

 

Features:

  • Compatible with right-hand drive and left-hand drive vehicles
  • Smooth bends for maximum airflow without any drone
  • Up to 30HP increase on the stock turbos, even more on upgraded turbos
  • Lifetime warranty on defects and fitment
  • 90 day return period
  • All orders ship in 1-2 business days
  • Spot on fitment
  • Flex section

 

Fitment:

  • 2015+ BMW M240i & Xdrive
  • 2016-2019 BMW 340i & Xdrive
  • 2016+ BMW 440i & Xdrive
  • 2016+ BMW 540i & Xdrive
  • 2016+ BMW 740i & Xdrive
  • 2017-2020 X3 M40
  • 2017-2020 X4 M40
  • 2019+ Toyota Supra 3.0L
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: 10775718870

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Roxx Reviews
Carnegie, US
★★★★★ 5
Love this water! Here's why!
Size: 42.3 Fl Oz (Pack of 12), Number of Items: 12
I am pretty picky about bottled water. I will only drink black capped water as white caps make me very ill and blue caps don't have the taste or quality of black caps (the color of caps indicate how it is collected and process). Of all the black caps, Essentia is my favorite brand. I love the strong, sturdy bottles, and prefer the larger size to help me remember to hydrate. Most people don't feel like water has affects like coffee or energy drinks, but this water is clean and provides me with a boost of alertness. In terms of the value, I think it's definitely overpriced. I don't believe water should come at such a high price, yet I still pay for this brand because of the taste, the enjoyment, my energy levels and how clean it tastes going down. And it doesn't make me ill. If you're new to understanding water, pH balances, and how water is different based on how it is processed, give this a try and experience the difference of it's effectiveness.
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Reviewed in the United States on February 3, 2026
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Susan Battle-Williams
Pawtucket, US
★★★★★ 5
Good Water
Size: 33.8 Fl Oz (Pack of 12), Number of Items: 12
Good price. Love this brand of water - no after taste. We even use the water in our ice maker :) as well as making lemon and cucumber water for hydration and a refresher.
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Reviewed in the United States on May 3, 2026
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Expanding Man
Pawtucket, US
★★★★★ 5
My Son's Favorite
Size: 42.3 Fl Oz (Pack of 12), Number of Items: 12
My son loves Essentia, and it's the way I can get him to drink water instead of sugary drinks. Essentia puts together an attractive package, too. The black boxes are instantly recognizable, and the bottles actually in drink holders in our car, making portability a big plus, for us, considering he goes around with a bottle most everywhere we go. For him, he says it's the best-tasting bottled water on the market, and its quality is instantly noticeable in comparison its competitors. It keeps him hydrated, and he prefers it to such a degree that we've started buying it by the case.
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Reviewed in the United States on May 1, 2026
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Randall L.
Birmingham, US
★★★★★ 4
Expensive but good tasting water
Size: 20 Fl Oz (Pack of 24), Number of Items: 24
Expensive but good water. Crazy thing was how it was shipped. Shipped in a box like three times the size of the case the water came in. Didn't have any packing materials inside this huge box to keep it from sliding around. Box arrived halfway opened.
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Reviewed in the United States on February 14, 2026
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Spill_dabeans
Louisville, US
★★★★★ 5
Five star taste
Size: 12 Fl Oz (Pack of 12), Number of Items: 12
5 start taste... Great product for summer time. Its better than most water brands on the market. The price is decent as well. Stay hydrated folks!
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Reviewed in the United States on April 21, 2026

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