Product Details
About this part
TCM is proud to release the B58tu2 aka B58 Gen 3 4.5 inch Catless Downpipe for your BMW or Supra
Free Shipping within Continental US
A TCM Catless B58 Downpipe is an essential upgrade for any enthusiast looking to maximize the performance of their B58 engine.
Our downpipe is made from high-quality 304 stainless steal. It is designed to provide maximum exhaust flow and improve turbo spool time, resulting in increased horsepower and torque. By removing the factory catalytic converter and keeping a large internal diameter with a smooth transition down to the midpipe size, we're able to maximize exhaust flow and reduce air turbulence. Giving you more power.
Not only does this provide an increase in power, it also provides you with a nice increase in exhaust tone. Making your car sound more aggressive.
The catless design eliminates the restrictive catalytic converter, allowing for maximum exhaust flow and reducing backpressure. This results in a noticeable increase in power and throttle response, as well as a more aggressive exhaust note.
The TCM Downpipe is a direct bolt-on replacement for the factory downpipe, no need to make any cuts or alterations.
The downpipe is also designed to work seamlessly with the factory exhaust system, as well as aftermarket systems.
Features:
- 4.5 Inch diameter for maximum exhaust flow
- Larger diameter to provide a deeper exhaust tone
- Compatible with right-hand drive and left-hand drive vehicles
- Smooth bends for maximum airflow without any drone
- 304 stainless steel, which provides excellent durability and resistance to corrosion.
- Up to 30HP increase on the stock turbos, even more on upgraded turbos
- Flex section
- Lifetime warranty on defects and fitment
- 60 day return period
- All orders ship in 24 hours
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Fitment Guaranteed
Fitment:
Fits RWD and AWD
Fits B58TU2 (Gen3)
- 2024+ BMW M340i G20/G21
- 2024+ BMW M440i G22/G23/G26
- 2024+ BMW 540i G60/61
- 2024+ BMW 740i G70
- 2024+ BMW X3 M50 G45
Fitment
Not sure it fits? Contact us with your car's year, model and VIN and we'll help you confirm before you order.
If a part doesn't fit as expected, contact us and we'll work with you to resolve it.
Majority of products have a fitment section in the product description or within the title.
Returns
- Unused, uninstalled parts can be returned or exchanged within 60 days of the order date.
- To start a return: Contact us first, don't use Return to Sender.
- Returns can have up to a 20% restocking fee.
- Built-to-order and special-order items can't be returned or cancelled once production begins.
Shipping
- Orders are processed 7 days a week to ensure your product ships as quickly as possible.
- Inspect parts within 10 days of delivery, and reach out regarding any damage or missing pieces.
See our Tariff Policy
TCM warranty
- TCM parts have a lifetime warranty against manufacturer defects, such as cracks and weld failures.
- TCM intake manifolds and electronics, such as lights and paddle shifters, have a 1-year warranty from the date of purchase.
- Wear and tear on wear items isn't covered. Wear items are parts that wear out with normal use, such as filters, gaskets and clamps.
- Road damage, finishes and faulty installation aren't covered.