SKU: 38588585832

Carbon Induction Kit for BMW B58 (M140i, M240i, M340i, M440i) - Carbon Intake Only

Sale price$200.39 Regular price$222.66
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Carbon Induction Kit for BMW B58 (M140i, M240i, M340i, M440i) - Carbon Intake OnlyIf you have already purchased the inlet hose for your vehicle (FMINLH25), this product is the carbon intake ONLY. For the full kit, please see FMINDK50 +11 BHP +19NM Torque Improved induction noise Full instructions Prepreg 2x2 twill formed carbon fibre Lifetime warranty This product is a direct replacement for OEM part numbers 13718601678, 13718605164, 13718601682. The B58 engine is a masterpiece from BMW, it makes great power, produces a fantastic

If you have already purchased the inlet hose for your vehicle (FMINLH25), this product is the carbon intake ONLY. For the full kit, please see FMINDK50

  • +11 BHP 
  • +19NM Torque
  • Improved induction noise
  • Full instructions
  • Prepreg 2x2 twill formed carbon fibre
  • Lifetime warranty

This product is a direct replacement for OEM part numbers 13718601678, 13718605164, 13718601682.

The B58 engine is a masterpiece from BMW, it makes great power, produces a fantastic noise and with the addition of FMINDK50 you can take these qualities even further. When our development team analysed the OEM airbox and inlet tract on the BMW M140i kindly loaned to us from The Performance Company, we came up with a multiple part solution to maximise all areas.

The Development Journey

Step 1:  UK and some EU spec M140i’s have a blank which stops the low-pressure zone that builds up in front of the radiator from entering the inlet tract. We created FMINLD2, a carbon fibre sculped duct to replace the blank, and route more air into the tract towards the airbox. 

Step 2: Now that this greater quantity of air has entered the airbox, we need a greater surface area of filtration to maximise the airflow towards the engine. Therefore, we decided on a high-flow performance cone filter and used our development of other upper airbox induction kits to inform our design process to create FMINDK50.

Step 3: The weak link was now the OEM inlet hose with its sound resonator and accordion ribs which cause turbulence and slows down the airflow. We created FMINLH25 from a multi-ply smooth silicone to significantly reduce turbulent airflow, and to handle big boost builds. We also increased its diameter from 85mm to 90mm.

*Get 10% off the induction kit and inlet duct when purchased together (code automatically applied at checkout)

 

We used SolidWorks CAD, 3D prints and numerous dyno sessions to truly unlock the power. Simulation testing played a large part in the design process to help maximise the airflow.

We were able to experiment with the airflow entering the chamber from the inlet tract into the lower airbox, by changing the position of the filter, the size and location of the louvres and other variables to ensure that the intake is maximising performance.

The 3D printed prototypes helped with comparing our simulation testing to real world driving conditions.

Please see our video on YouTube which

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: 38588585832

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Eliezer Joaquin
Lexington, US
★★★★★ 1
Buy 2 sizes if you are interested.
I ordered this suit for an event, unfortunately was not able to wear it. The Vest was missing, it fit bigger than it should (over sized although I measured), and the black jacket came with a WHITE STAIN. The suit and vest were the main reason for my purchase. The material of the suit was comfortable and stretchable, pants fit well. The bow tie and pocket piece were great in color and detail, brand new.
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Reviewed in the United States on March 13, 2026
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Abbott Gautreaux
Lake Worth, US
★★★★★ 3
No bow tie
Size: Large, Color: Navy-194
I didn’t come with bow tie
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Reviewed in the United States on January 7, 2026
L
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Lori Gehring
Battle Creek, US
★★★★★ 5
Great buy
Color: Blue Slant Check, Size: Medium
Very nice material. Washes well and even travels in a suitcase without wrinkling. Color is as described and fits well. Great buy for the price.
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Reviewed in the United States on May 12, 2026
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Samantha lankheit
Pawtucket, US
★★★★★ 5
Soft and vibrant
Color: Blue/Yellow, Size: Medium
The material feels great and the colors are great. The fit is true to size . Nice addition to my son’s golf shirt selection.
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Reviewed in the United States on March 22, 2026
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Brandon C
Port Orchard, US
★★★★★ 4
Thick quality polo shirt, just maybe not for Golfing.
Color: Black/Blue, Size: Medium, Color: Black/Blue, Size: Medium
This shirt was a lot thicker than I imagined. It's built well and fits as intended, but as far as a golf shirt it is quite heavy, and I would feel as though it would cause overheating or sweating. Very thick shirt, possible better for colder golfing days and still look good. I enjoy the color and pattern. It is soft and comfortable, again just a little thinker than anticipated, not a quick dry material, but a fully cotton blend. Decent value for the money and would consider pitching others in the future but most likely not for golfing in general.
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Reviewed in the United States on May 23, 2026

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