Is this BMW 440i downpipe street legal?

No. This stainless steel downpipe does not meet emission compliance requirements for street or highway use and is intended for track or off-road use only. ECU remapping is mandatory after installation to prevent check engine warnings from the deleted factory catalytic converter setup.

Does this BMW 440i downpipe fit other BMW models?

The same Akrapovic downpipe is also sold for the B58-powered BMW 340i, M240i, and M140i, since they share the same turbocharged inline-six platform. If you drive one of those models, ask us about the matching listing.

How much power and weight does this downpipe add?

This stainless steel downpipe reduces weight by 0.4 kg (about 8.8% lighter than stock) and adds up to 13.2 kW (17.9 hp) at 5,900 rpm and 17.2 Nm (12.7 lb-ft) of torque at 4,000 rpm. It's tested alongside Akrapovic's Evolution Line exhaust for the best combined gains.

Do I need to remap my ECU after installing this downpipe?

Yes. ECU remapping is mandatory after installation. Without it, the deleted factory catalytic converter setup will likely trigger a check engine light.

What years of the BMW 440i does this fit?

This downpipe is designed for the F32 (Coupe), F33 (Cabrio), and F36 (Gran Coupe) BMW 440i. Confirm your exact model year with us before ordering — fitment data isn't fully consistent across sources for this SKU's later model years.

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Description

Akrapovic Stainless Steel Downpipe for F32 F33 F36 BMW 440i

The Akrapovic BMW 440i Downpipe attacks the biggest restriction in the BMW 440i exhaust. Replacing the factory section with free-flowing stainless steel construction, it frees up to 18hp and 13ft-lbs and unlocks a deeper, more purposeful tone. Built to bolt straight onto the listed platform, it is the foundation of a serious exhaust setup and pairs with an ECU tune for the strongest gains.

Features

High-flow stainless steel downpipe with sport catalytic converter, tested alongside Akrapovic’s Evolution Line exhaust systems
Reduces weight by 0.4 kg, about 8.8% lighter than the stock downpipe
Increases output by up to 13.2 kW (17.9 hp) at 5,900 rpm and 17.2 Nm (12.7 lb-ft) of torque at 4,000 rpm
Enhanced sound character with reduced drone compared to stock
ECU remapping is mandatory after installation to prevent a check engine light

Applications

BMW 440i: F32, F33, F36 | 2016 to 2019

Notes

This product is not street legal — it does not meet emission compliance requirements for street or highway use and is intended for track or off-road use only
ECU remapping is mandatory after installation; without it, expect a check engine light from the deleted factory catalytic converter setup
Manufacturer installation instructions: download the PDF.
Fitment is specific to the F32, F33, F36 platform and years listed above. For any questions on fitment or specifications, Contact us and we will confirm the correct part for your build.

Frequently Asked Questions

Is this BMW 440i downpipe street legal?
No. This stainless steel downpipe does not meet emission compliance requirements for street or highway use and is intended for track or off-road use only. ECU remapping is mandatory after installation to prevent check engine warnings from the deleted factory catalytic converter setup.
Does this BMW 440i downpipe fit other BMW models?
The same Akrapovic downpipe is also sold for the B58-powered BMW 340i, M240i, and M140i, since they share the same turbocharged inline-six platform. If you drive one of those models, ask us about the matching listing.
How much power and weight does this downpipe add?
This stainless steel downpipe reduces weight by 0.4 kg (about 8.8% lighter than stock) and adds up to 13.2 kW (17.9 hp) at 5,900 rpm and 17.2 Nm (12.7 lb-ft) of torque at 4,000 rpm. It’s tested alongside Akrapovic’s Evolution Line exhaust for the best combined gains.
Do I need to remap my ECU after installing this downpipe?
Yes. ECU remapping is mandatory after installation. Without it, the deleted factory catalytic converter setup will likely trigger a check engine light.
What years of the BMW 440i does this fit?
This downpipe is designed for the F32 (Coupe), F33 (Cabrio), and F36 (Gran Coupe) BMW 440i. Confirm your exact model year with us before ordering — fitment data isn’t fully consistent across sources for this SKU’s later model years.

About Akrapovic

Akrapovic is a manufacturer of premium exhaust systems for motorcycles and performance cars, recognized globally for its use of advanced technology and high-quality materials. The company’s state-of-the-art facilities in Slovenia include an in-house titanium foundry and metallurgical laboratory, giving it full control over the materials and processes behind every component it produces. With over 1,500 employees and distribution across more than eighty countries, Akrapovic’s roots in motorsport run deep. The knowledge gained from supporting MotoGP, WorldSBK, MXGP, DTM, and other racing programs feeds directly into the street and performance car products it builds, including the Stainless Steel Downpipe for the BMW 440i.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Akrapovic Stainless Steel Downpipe for F32 F33 F36 BMW 440i [DP-BM/SS/5/H]

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Akrapovic Stainless Steel Downpipe for F32 F33 F36 BMW 440i

Features

Applications

Notes

Frequently Asked Questions

About Akrapovic

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