Active Autowerke Downpipe W/ GESI G - Sport Cat - 2016+ M240i / 340i / 440i (B58) (11-062)
SKU: 94672116972

Active Autowerke Downpipe W/ GESI G - Sport Cat - 2016+ M240i / 340i / 440i (B58) (11-062)

Sale price$640.82 Regular price$712.02
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

Active Autowerke Downpipe W/ GESI G - Sport Cat - 2016+ M240i / 340i / 440i (B58) (11-062)Active Autowerke's downpipe for the 2016+ BMW M240i, 340i, and 440i (B58 engine) improves exhaust flow for enhanced turbo response by replacing the restrictive OEM downpipe. Utilizes 4. 5" diameter 304 stainless steel piping for increased flow and durability Includes a 4. 5" high flow GESI G Sport catalytic converter that avoids Check Engine Lights Converter is EPA registered, OBD2 compliant, and rated for 500 850 hp applications (not CARB legal)

Active Autowerke's downpipe for the 2016+ BMW M240i, 340i, and 440i (B58 engine) improves exhaust flow for enhanced turbo response by replacing the restrictive OEM downpipe.

  • Utilizes 4.5" diameter 304 stainless steel piping for increased flow and durability
  • Includes a 4.5" high flow GESI G-Sport catalytic converter that avoids Check Engine Lights
  • Converter is EPA registered, OBD2 compliant, and rated for 500-850 hp applications (not CARB legal)
  • Features stainless flex joint and tapers down to OEM 80mm exhaust outlet diameter
  • Precision fit with casted stainless steel V-Band for easy bolt-on installation (no cutting or welding)
  • Constructed from TIG welded 304 stainless steel with ultra-high flow 400 cell per square inch catalyst
  • Withstands temperatures up to 1500°F and reaches operational efficiency within 9 seconds of startup

This downpipe optimizes turbocharger spool by enabling faster exhaust gas evacuation while maintaining emissions compliance under federal EPA standards (except California). It supports forced induction setups without sacrificing engine performance or triggering emissions warnings.

Note: Not legal for use in California per state vehicle code sections 27156 and 38391. Federal law prohibits tampering with emissions control devices; this part meets EPA standards for aftermarket repair or replacement.

Part Type: Downpipe
Fitment: Vehicle Specific for 2016+ BMW M240i / 340i / 440i with B58 engine

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: 94672116972

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Lewis Fam
Lexington, US
★★★★★ 4
Good fit but Paper Thin Insoles
Size: 9.5, Color: White/Team Red
Seems like a good shoe so far and looks just like the product images. The sizing is 100% accurate i got a 9.5 and it fit perfectly. Taking a star off for the terribly paper thin insoles in came in as i had to immediately replace those with some third party memory foam insoles. Definitely needs more cushioning out of the box. For the money though i recommend them.
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Reviewed in the United States on October 1, 2025
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Rodney & Danielle Clements
Boise, US
★★★★★ 5
Made well and the purple color is true to purple ...
Made well and the purple color is true to purple. They are too big for my big 3 year old. Extra Small would fit a 5 year old perfectly I think.
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Reviewed in the United States on October 5, 2016
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Lasonia J.
Boise, US
★★★★★ 5
Nice sleep shorts for a girl.
These worked out very well as sleep shorts for a girl. It is hard to find shirts that are not so short for girls and the purple color was well liked. These can be used more then just boys or sports or working out in the gym. They fit a 12 year old well (the size i ordered). The color looks like a nice bright (not too bright) purple.
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Reviewed in the United States on July 3, 2022
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Katherine Truesdale
Natrona Heights, US
★★★★★ 4
Bought for school uniform
I bought these for my daughter's school uniform. There is no logo or brand name visible. But they are very thin.
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Reviewed in the United States on April 23, 2023
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E
Houston, US
★★★★★ 1
Fit good but see through
Fits perfect but they are see through even with the 2nd layer shorts through it. Not great for public, sports, or anything of the same. Not too happy because they were for school and summer.
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Reviewed in the United States on May 10, 2022

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