Is this BMW M3 carbon fiber diffuser purely for looks, or does it add performance?

It's a styling accessory. Akrapovic designed this chopped carbon fiber diffuser to add visual impact to the rear fascia and frame the tailpipes of its Slip-On Line (Titanium) exhaust, but it doesn't add horsepower, torque, or measurable aerodynamic downforce on its own.

Is this Akrapovic M3 diffuser street legal?

Yes. It carries ABE type approval, meaning it's compliant with German Type Approval under paragraph 20 of the StVZO. Akrapovic notes that compliance labels are only valid when the product is installed according to the included instructions, so follow those closely and confirm your local regulations before fitting it.

Does this diffuser fit the BMW M4 as well as the M3?

Yes. Akrapovic catalogs this hand-crafted chopped carbon fiber diffuser, part number DI-BM/CA/9/CF, across both the G80/G81 M3 sedan and the G82/G83 M4 coupe, since the two share a rear fascia design underneath their body-specific styling. The same part number covers either platform.

What finish options are available for this diffuser?

This SKU, DI-BM/CA/9/CF, is the Matte finish. Akrapovic also offers the same hand-crafted diffuser in High Gloss (DI-BM/CA/9/G) and High Gloss Black (DI-BM/CA/9/GB) under separate part numbers, so choose whichever finish best complements the rest of your car's exterior trim.

Do I need an Akrapovic exhaust to install this diffuser?

No. This diffuser mounts to the rear fascia independently of your exhaust choice, so it fits whether you're running the factory system or an aftermarket one. Akrapovic designed it to complement the tailpipes of its own Slip-On Line (Titanium) exhausts, but it isn't required to install or use.

How is this Akrapovic diffuser made?

It's a lightweight, hand-crafted chopped carbon fiber component produced in-house by Akrapovic rather than outsourced. Chopped carbon fiber construction gives each piece a distinctive, randomized weave pattern, and the matte finish here is left unlacquered for a more understated look than the High Gloss alternatives.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

Akrapovic Rear Chopped Carbon Fiber Diffuser for G80 / G81 / G82 / G83 BMW M3 / M4

This Akrapovic BMW M3 carbon fiber diffuser gives the rear fascia extra visual impact, hand-crafted from chopped carbon fiber to frame the tailpipes of Akrapovic’s Slip-On Line (Titanium) exhaust at their best. Akrapovic catalogs this same part number across both the M3 sedan and its M4 coupe sibling, since the two share a rear fascia design underneath their body-specific styling. Akrapovic builds it in-house rather than outsourcing it, using the same skilled technicians behind its motorsport-proven exhaust systems, and backs it with ABE type approval so it’s a legitimate road-legal upgrade rather than a track-only piece.

Features

Hand-crafted chopped carbon fiber construction produced in-house by Akrapovic
Matte finish for an understated, unlacquered carbon weave look
Lightweight accessory that doesn’t add unsprung mass to the rear of the vehicle
ABE type approval for German road-legal compliance.

Applications

BMW M3: G80 / G81 | 2021-2026 | S58 3.0L Twin-Turbo I6
BMW M4: G82 / G83 | 2021-2026 | S58 3.0L Twin-Turbo I6

Notes

This diffuser carries ABE type approval, but that compliance is only valid when installed per Akrapovic’s included instructions
This is the Matte finish; High Gloss (DI-BM/CA/9/G) and High Gloss Black (DI-BM/CA/9/GB) versions are available separately
The same part number, DI-BM/CA/9/CF, covers both the M3 sedan and M4 coupe
This diffuser is a styling accessory and does not require an Akrapovic exhaust to install or use
Professional installation is recommended
Manufacturer installation instructions: download the PDF

Frequently Asked Questions

Is this BMW M3 carbon fiber diffuser purely for looks, or does it add performance? It’s a styling accessory. Akrapovic designed this chopped carbon fiber diffuser to add visual impact to the rear fascia and frame the tailpipes of its Slip-On Line (Titanium) exhaust, but it doesn’t add horsepower, torque, or measurable aerodynamic downforce on its own.
Is this Akrapovic M3 diffuser street legal? Yes. It carries ABE type approval, meaning it’s compliant with German Type Approval under paragraph 20 of the StVZO. Akrapovic notes that compliance labels are only valid when the product is installed according to the included instructions, so follow those closely and confirm your local regulations before fitting it.
Does this diffuser fit the BMW M4 as well as the M3? Yes. Akrapovic catalogs this hand-crafted chopped carbon fiber diffuser, part number DI-BM/CA/9/CF, across both the G80/G81 M3 sedan and the G82/G83 M4 coupe, since the two share a rear fascia design underneath their body-specific styling. The same part number covers either platform.
What finish options are available for this diffuser? This SKU, DI-BM/CA/9/CF, is the Matte finish. Akrapovic also offers the same hand-crafted diffuser in High Gloss (DI-BM/CA/9/G) and High Gloss Black (DI-BM/CA/9/GB) under separate part numbers, so choose whichever finish best complements the rest of your car’s exterior trim.
Do I need an Akrapovic exhaust to install this diffuser? No. This diffuser mounts to the rear fascia independently of your exhaust choice, so it fits whether you’re running the factory system or an aftermarket one. Akrapovic designed it to complement the tailpipes of its own Slip-On Line (Titanium) exhausts, but it isn’t required to install or use.
How is this Akrapovic diffuser made? It’s a lightweight, hand-crafted chopped carbon fiber component produced in-house by Akrapovic rather than outsourced. Chopped carbon fiber construction gives each piece a distinctive, randomized weave pattern, and the matte finish here is left unlacquered for a more understated look than the High Gloss alternatives.

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 Chopped Carbon Fiber Rear Diffuser for the BMW M3.

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.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

Akrapovic Rear Chopped Carbon Fiber Diffuser for G80 / G81 / G82 / G83 BMW M3 / M4 [DI-BM/CA/9/CF]

Guaranteed Safe Checkout

Akrapovic Rear Chopped Carbon Fiber Diffuser for G80 / G81 / G82 / G83 BMW M3 / M4

Features

Applications

Notes

Frequently Asked Questions

About Akrapovic

Reviews