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Rear Diffuser

Adding a more aggressive rear diffuser to your BMW can offer some performance benefits, but is primarily an aesthetic upgrade. BMWs naturally look great from the rear, why not make yours look even better?
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Turner Motorsport - Corporate Logo
T#:6258334
Part#: 006706LA10KT
Ships Today
Sale - Save 10% $ 336.99

This product was last offered at the strikethrough price on
06-14-2026

$ 303.29 USD
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Sale - Save 10%
$ 336.99

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$ 303.29 USD
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We at Turner Motorsport weren't happy with the current offerings for E36 M3 diffusers, so we decided to create something new!
Turner Motorsport - Corporate Logo
T#:597333
Part#: 028979TMS01
In Stock
Sale - Save 20% $ 331.99

This product was last offered at the strikethrough price on
06-14-2026

$ 265.59 USD
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$ 331.99

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$ 265.59 USD
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We at Turner Motorsport weren't happy with the current offerings for E46 M3 diffusers, so we decided to create something new! Upgrade the exterior styling on your BMW E46 M3 with the Turner In-House designed and engineered ABS Rear Diffuser. The same style as the Turner Carbon Diffuser, but in a more affordable ABS plastic! Using all factory mounting locations, this diffuser is a direct bolt-on upgrade, that can be installed in minutes. Featuring a deep profile, an aggressive fin design, and extending the entire width of the rear bumper, this exclusive design from Turner Motorsport will be sure to turn heads! Make a bold statement and let your BMW stand out with the Turner ABS Diffuser! Features & Specifications: Diffuser with curvature designed around the E46 M3 body lines Designed in-house using state of the art 3d laser scanning and CAD technology for precision fitment Mounts to existing bumper insert mounting locations with OE hardware Made from lightweight, vacuum-formed ABS polymer, with UV-stabilized gloss black sheet Mimics the lower section of the bumper & OE diffuser lines to accentuate OEM features Mounts to OE clip locations and OE holes on the outer edges of the bumper with supplied, stainless hardware
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Turner Motorsport - Corporate Logo
T#:640267
Part#: 006706LA09KT
In Stock
Sale - Save 10% $ 335.99

This product was last offered at the strikethrough price on
06-14-2026

$ 302.39 USD
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Sale - Save 10%
$ 335.99

This product was last offered at the strikethrough price on
06-14-2026

$ 302.39 USD
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We at Turner Motorsport weren't happy with the current offerings for E36 M3 diffusers, so we decided to create something new!

Turner Motorsport - Corporate Logo
T#:639026
Part#: 028530TMS01
In Stock
Sale - Save 20% $ 718.99

This product was last offered at the strikethrough price on
06-14-2026

$ 575.19 USD
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Sale - Save 20%
$ 718.99

This product was last offered at the strikethrough price on
06-14-2026

$ 575.19 USD
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Upgrade the exterior styling on your BMW F87 M2 with the Turner In-House engineered Carbon Fiber Rear Diffuser. Using all factory mounting locations, this diffuser is a direct bolt-on upgrade that can be installed in minutes. Featuring a deep profile, aggressive fin design, and hand-laid 2x2 pre-preg carbon fiber, this exclusive design from Turner Motorsport will be sure to turn heads!
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Turner Motorsport - Corporate Logo
T#:584863
Part#: 023241TMS01
In Stock
Sale - Save 20% $ 740.99

This product was last offered at the strikethrough price on
06-14-2026

$ 592.79 USD
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$ 740.99

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$ 592.79 USD
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A beautiful addition to make the rear of your F8X stand out!

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Turner Motorsport - Corporate Logo
T#:16940491
Part#: 048254LA01KT
In Stock
Sale - Save 25% $ 536.99

This product was last offered at the strikethrough price on
06-14-2026

$ 402.74 USD
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Sale - Save 25%
$ 536.99

This product was last offered at the strikethrough price on
06-14-2026

$ 402.74 USD
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Upgrade the exterior styling on your G80/G82 with our In-House designed and engineered ABS Rear Diffuser. Utilizing factory mounting locations and supplied hardware this diffuser is a direct bolt-on upgrade that can be installed directly in place of your factory diffuser. Featuring a deep profile, an aggressive fin design, and extending the entire width of the rear bumper, our exclusive design is sure to turn heads! Our engineers did an absolutely amazing job on this diffuser from the styling to the fit and finish that is guaranteed to stand out in the market.

Pay close attention to the design characteristics of the diffuser. The emphasized outline of the diffuser adds a whole new dimension to the rear bumper bringing out the beautiful body lines of the G80. By adding an aggressive fin design and boxing around the exhaust exits the rear/side view is almost transformed into a whole new sub model that BMW forgot to offer.

Features & Specifications:

Designed to accentuate the G80/G82 body lines
Perfectly houses quad 4.0" exhaust tips for upgraded and factory exhausts
Designed in-house using state of the art 3d laser scanning and CAD technology for precision fitment
Mounts to existing bumper insert mounting locations with supplied hardware
Made from lightweight, vacuum-formed ABS polymer, with UV-stabilized gloss black sheet
Mimics the lower section of the bumper with added character to amplify OEM features
Product Development:

Our Turner Motorsport Rear Diffuser was designed, engineered, tested and quality inspected by our Research and Development team. We strive for the highest level of precision and quality through leading edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long term product testing.

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Turner Motorsport - Corporate Logo
T#:586814
Part#: 028937TMS01
In Stock
Sale - Save 12% $ 682.99

This product was last offered at the strikethrough price on
05-03-2026

$ 599.99 USD
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Sale - Save 12%
$ 682.99

This product was last offered at the strikethrough price on
05-03-2026

$ 599.99 USD
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Upgrade the exterior styling on your BMW E46 M3 with the Turner In-House designed and engineered Carbon Fiber Rear Diffuser. Using all factory mounting locations, this diffuser is a direct bolt-on upgrade that can be installed in minutes. Featuring a deep profile, an aggressive fin design, and hand-laid 2x2 pre-preg carbon fiber, this exclusive design from Turner Motorsport will be sure to turn heads!
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Turner Motorsport - Corporate Logo
T#:642120
Part#: 008653LA01
In Stock
Sale - Save 15% $ 537.99

This product was last offered at the strikethrough price on
06-14-2026

$ 457.29 USD
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Sale - Save 15%
$ 537.99

This product was last offered at the strikethrough price on
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$ 457.29 USD
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Upgrade the exterior styling on your BMW G20 M340 with the Turner In-House engineered Gloss Black Rear Diffuser. Using all factory mounting locations, this diffuser is a direct bolt-on upgrade that can be installed in minutes. Featuring a deep profile, an aggressive fin design, this exclusive design from Turner Motorsport will be sure to turn heads!
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Turner Motorsport - Corporate Logo
T#:30264521
Part#: 050539LA01-01
In Stock
Sale - Save 30% $ 799.99

This product was last offered at the strikethrough price on
05-03-2026

$ 559.99 USD
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Sale - Save 30%
$ 799.99

This product was last offered at the strikethrough price on
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$ 559.99 USD
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Upgrade the rear styling of your BMW G87 M2 with the Turner Motorsport Carbon Fiber Rear Diffuser. Specifically engineered for the G87 platform, this carbon fiber diffuser enhances factory body lines with a more aggressive, motorsport-inspired appearance while maintaining a clean OEM+ look. Designed in-house using state-of-the-art 3D laser scanning and CAD technology, ensuring precise fitment and seamless integration with the factory rear bumper, mounting directly to existing locations with no modifications required.

Constructed from premium, hand-laid 2x2 twill weave carbon fiber and autoclave-cured epoxy resin, this lightweight BMW M2 carbon fiber diffuser delivers exceptional strength, durability, and a high-quality finish that complements both stock and modified vehicles. The design closely follows the lower contour of the OEM bumper, adding depth and visual impact while amplifying original styling cues.

Engineered to properly house quad 4.0-inch exhaust tips, this G87 M2 rear diffuser is fully compatible with both factory and aftermarket exhaust systems, ensuring a clean, functional fit and balanced rear-end appearance.

Features and Design:

BMW G87 M2 carbon fiber rear diffuser engineered for precise OEM fitment
Enhances factory body lines with an aggressive, OEM+ aesthetic
Designed to house quad 4.0" exhaust tips (compatible with stock and aftermarket exhausts)
Developed in-house using advanced 3D laser scanning and CAD modeling
Direct bolt-on installation using factory mounting locations and hardware
Constructed from hand-laid 2x2 twill weave carbon fiber
Autoclave-cured epoxy resin for strength, durability, and premium finish
Mimics and enhances the lower section of the factory rear bumper
Product Development:

Our Turner Motorsport Rear Diffuser was designed, engineered, tested and quality inspected by our Research and Development team at Turner Motorsport. We strive for the highest level of precision and quality through leading edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long term product testing.

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Turner Motorsport - Corporate Logo
T#:21012584
Part#: 050525LA01
In Stock
Sale - Save 34% $ 438.99

This product was last offered at the strikethrough price on
05-03-2026

$ 289.99 USD
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Sale - Save 34%
$ 438.99

This product was last offered at the strikethrough price on
05-03-2026

$ 289.99 USD
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Transform the look of your G87 with our Turner in-house designed ABS Rear Diffuser, meticulously crafted for a bold style upgrade. Engineered to seamlessly replace your factory diffuser, this upgrade transforms the rear profile with its striking deep profile and aggressive fin design, exclusively crafted by our engineers at Turner to command attention.

The diffuser's design accentuates the sleek contours of the G87, elevating its aesthetic appeal. Installation is effortless, requiring no modifications. Simply uninstall the current valance, align the tabs, and securely fasten the diffuser into place using the factory hardware and mounting points. Confirm a perfect fit by ensuring tab alignment, then effortlessly secure them with a gentle press for a flawless finish.

Features & Specifications:

Transformative
Designed to accentuate the G87 body lines
Mimics the lower section of the bumper with added character to amplify OEM features
Perfectly houses quad 4.0" exhaust tips for upgraded and factory exhausts
Designed in-house using state of the art 3d laser scanning and CAD technology for precision fitment
Direct fit utilizing factory clip locations and hardware
Crafted from lightweight, vacuum-formed UV-stabilized gloss black ABS polymer
Product Development:

Our Turner Motorsport Rear Diffuser was designed, engineered, tested and quality inspected by our Research and Development team at Turner Motorsport. We strive for the highest level of precision and quality through leading edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long term product testing.

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Turner Carbon Fiber Diffuser - G20 M340i / xDrive
Does not fit factory exhaust tips
Turner Motorsport - Corporate Logo
T#:642041
Part#: 013748LA01
In Stock
Sale - Save 10% $ 822.99

This product was last offered at the strikethrough price on
06-14-2026

$ 740.69 USD
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Sale - Save 10%
$ 822.99

This product was last offered at the strikethrough price on
06-14-2026

$ 740.69 USD
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Upgrade the exterior styling on your BMW G20 M340 with the Turner In-House engineered Carbon Fiber Rear Diffuser. Using all factory mounting locations, this diffuser is a direct bolt-on upgrade that can be installed in minutes. Featuring a deep profile, an aggressive fin design, and hand-laid 2x2 pre-preg carbon fiber, this exclusive design from Turner Motorsport will be sure to turn heads!
Show More Show Less
Turner Motorsport - Corporate Logo
T#:587860
Part#: 24623TMS01KT
In Stock
Sale - Save 3% $ 1,367.99

This product was last offered at the strikethrough price on
06-14-2026

$ 1,326.95 USD
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Sale - Save 3%
$ 1,367.99

This product was last offered at the strikethrough price on
06-14-2026

$ 1,326.95 USD
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If you already have the Turner upper diffuser installed on your vehicle, this kit includes all of the hardware you need to install the lower as well.
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Turner Motorsport - Corporate Logo
T#:587258
Part#: 24623TMSKT
In Stock
Sale - Save 15% $ 2,099.99

This product was last offered at the strikethrough price on
06-14-2026

$ 1,784.99 USD
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Sale - Save 15%
$ 2,099.99

This product was last offered at the strikethrough price on
06-14-2026

$ 1,784.99 USD
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Both Upper & Lower Diffusers paired together to save you money!
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ECS - Corporate Logo
T#:23947136
Part#: 047602LA01KT
In Stock
Sale - Save 25% $ 462.99

This product was last offered at the strikethrough price on
06-14-2026

$ 347.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 462.99

This product was last offered at the strikethrough price on
06-14-2026

$ 347.24 USD
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ECS Exclusive Proudly Offered at Turner Motorsport!

Add-on diffuser to deliver a true motorsport look to your M3. Fastened seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E36.

The E36 M3 is an amazing looking car right out of the box but a common BMW issue is the height of the front vs rear bumpers. As far back as the E30, the front bumper is much lower than the rear bumper and the E36 M3 faces the same issue. With this problem the front bumper is always super low to the ground and the rear bumper looks in-complete. The ECS add-on diffuser is a unique option for balancing out the rear bumper with the height of the front bumper for a full and complete look.

Give your M3 that wild style that stands out from the crowd, and obtain a nice balanced look. This is just the start of a new line of Street Flow Diffusers diffusers that are a must have extension of your awesome ride. The diffusers come powder coated in a sleek satin-black finish, are a blast to install and fit seamlessly against the rear bumper for a professional looking install every time. The Street Flow diffuser attaches below your factory rear diffuser and exhaust of your choosing to fill out the rear end for a nice full and aggressive styling profile.

Lets take a trip together down a new and unique path. Over the years ECS has designed factory replacement ABS and Carbon Fiber diffusers for all different models of BMW's. For the factory replacements ECS focus was to take the oem characteristics and add a twist and really bring out a more aggressive look with a direct replacement diffuser. For their new line of diffusers, us as car enthusiasts wanted to design a set of diffusers that really pushed the envelope and stepped outside of our comfort zone. Our new line of add-on diffusers is a result of our engineering team and fellow enthusiasts spending time study the M3 chassis, modeling different designs, testing prototypes and making changes to get a final product that we are extremely excited to offer. The E36 M3 Street Flow Diffuser is the first in our line of new diffusers. Stay tuned for the E92 M3 diffusers next!

Features:

Adds an aggressive aesthetic in addition to the subtle factory rear diffuser
Lightweight and durable 10ga aluminum in satin black powder coat to blend with the factory trim color
Installation is secure and simple with ample adjustability built in for perfect fitment
Design:

10 ga 5052 aluminum construction
Black satin powder coat for long term corrosion resistance
5 piece design to simplify installation
Slotted mounting locations to allow for mounting adjustment
Laser cut ECS logo pre powder coat for a smooth finish
Hidden hardware for better aesthetic

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ECS - Corporate Logo
T#:20485540
Part#: 040790LA01-01
In Stock
Sale - Save 20% $ 405.99

This product was last offered at the strikethrough price on
06-14-2026

$ 324.79 USD
Sale - Save 20%
$ 405.99

This product was last offered at the strikethrough price on
06-14-2026

$ 324.79 USD

Presenting the ECS rear diffuser tailored exclusively for your 1 Series – a fusion of both aftermarket and factory styling. Rarely does one find a design that not only encapsulates every curve and contour of a vehicle but elevates its overall aesthetic with a single, impactful addition. Amongst the limited options available for the 1 Series, the engineers at ECS have risen to the challenge of providing aftermarket support for these perfectly sized vehicles.

The diffuser replaces the mundane factory M Sport diffuser with a perfectly fitting alternative, designed to enhance the rear end of the 1 Series. Using the existing factory hardware and tab mounting locations, a transformation is merely a few screws and a plastic trim tool away. During the prototype phase, an impressive fit and finish were achieved, but their commitment to excellence led them to make further refinements. With the updated design, the ECS diffuser is now polished to perfection, an indication of the craftsmanship invested in each product.

Installation is a breeze, requiring no drilling, cutting, or modifications of any kind. Simply remove the current valance, align the tabs, and effortlessly secure the diffuser in place using the factory mounting locations and hardware. Ensure a snug fit by verifying the alignment of all tabs, and with a gentle press, witness the tabs seamlessly click into position.

For those with a 1 Series, anticipate a wave of excitement as a range of exhaust options tailored to all motor variants, including the N52, N54, and N55, are unveiled.

Features and advantages:

Transformative
Enhances the rear aesthetic of the 1 Series
Direct fit utilizing factory clip locations and hardware
Available in Textured Matte Black and Gloss Black
Crafted from lightweight, vacuum-formed UV-stabilized gloss black ABS polymer
Compatible with both E82 and E88 models equipped with the M-Sport Package

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AUTOTECKNIC - Corporate Logo
T#:14419810
Part#: BM-0341
In Stock
$ 600.00 USD
$ 600.00 USD
The rear end of your G8X will thank you for this carbon diffuser trim set, giving it a more aggressive and sportier look! Manufactured from the highest-quality dry carbon, this diffuser set is one of the best carbon trim options on the market for your car!
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AUTOTECKNIC - Corporate Logo
T#:20979734
Part#: ATK-BM-0888
Ships in 7 Business Days
$ 795.00 USD
$ 795.00 USD
Looking to change the character of your BMW? This carbon fiber rear diffuser is a great way of getting it done. Carbon fiber means no need to paint, this diffuser will add a beautiful and sporty appearance without being overstated. Constructed of high-quality carbon fiber, this diffuser is sure to impress in every way. Made from high-quality dry carbon fiber, this product is durable and ready to give your car some more personality! Made from high-quality dry carbon fiber, this product is durable and ready to give your car some more personality!
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Dinan Carbon Fiber Rear Side Splitters - G80
Call In Or Chat For Best Price!
Dinan - Corporate Logo
T#:23020157
Part#: D980-0048
Back Ordered
11% off MSRP $ 658.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 584.99 USD
Free Shipping
11% off MSRP
$ 658.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 584.99 USD
Free Shipping
Dinan Carbon Fiber Rear Side Splitters (rear winglets) offer a simple straightforward solution to enhancing the rear quarters of your G80 M3. Together with the Dinan Rear Diffuser Surround, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace. Features: 2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact-resistant, durable, and strong Clear-coated for maximum UV protection and fade resistance Includes mounting screws and also utilizes factory mounting tabs for an easy installation with a clean fit and finish Pair together with the Dinan Rear Diffuser Surround to complete the full rear look
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ECS - Corporate Logo
T#:391782
Part#: E46CSLCFDIFF
Back Ordered
Sale - Save 5% $ 515.99

This product was last offered at the strikethrough price on
06-13-2026

$ 490.19 USD
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Sale - Save 5%
$ 515.99

This product was last offered at the strikethrough price on
06-13-2026

$ 490.19 USD
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Half carbon diffuser to complete your CSL look
ECS - Corporate Logo
T#:20485541
Part#: 040790LA01-02
In Stock
Sale - Save 37% $ 397.99

This product was last offered at the strikethrough price on
05-03-2026

$ 249.99 USD
Sale - Save 37%
$ 397.99

This product was last offered at the strikethrough price on
05-03-2026

$ 249.99 USD

Presenting the ECS rear diffuser tailored exclusively for your 1 Series – a fusion of both aftermarket and factory styling. Rarely does one find a design that not only encapsulates every curve and contour of a vehicle but elevates its overall aesthetic with a single, impactful addition. Amongst the limited options available for the 1 Series, the engineers at ECS have risen to the challenge of providing aftermarket support for these perfectly sized vehicles.

The diffuser replaces the mundane factory M Sport diffuser with a perfectly fitting alternative, designed to enhance the rear end of the 1 Series. Using the existing factory hardware and tab mounting locations, a transformation is merely a few screws and a plastic trim tool away. During the prototype phase, an impressive fit and finish were achieved, but their commitment to excellence led them to make further refinements. With the updated design, the ECS diffuser is now polished to perfection, an indication of the craftsmanship invested in each product.

Installation is a breeze, requiring no drilling, cutting, or modifications of any kind. Simply remove the current valance, align the tabs, and effortlessly secure the diffuser in place using the factory mounting locations and hardware. Ensure a snug fit by verifying the alignment of all tabs, and with a gentle press, witness the tabs seamlessly click into position.

For those with a 1 Series, anticipate a wave of excitement as a range of exhaust options tailored to all motor variants, including the N52, N54, and N55, are unveiled.

Features and advantages:

Transformative
Enhances the rear aesthetic of the 1 Series
Direct fit utilizing factory clip locations and hardware
Available in Textured Matte Black and Gloss Black
Crafted from lightweight, vacuum-formed UV-stabilized gloss black ABS polymer
Compatible with both E82 and E88 models equipped with the M-Sport Package

Show More Show Less

ECS - Corporate Logo
T#:20815172
Part#: 047616LA01KT
In Stock
Sale - Save 15% $ 520.99

This product was last offered at the strikethrough price on
06-14-2026

$ 442.84 USD
Free Shipping
Sale - Save 15%
$ 520.99

This product was last offered at the strikethrough price on
06-14-2026

$ 442.84 USD
Free Shipping

ECS Exclusive Proudly Offered at Turner Motorsport!

Add-on diffuser to deliver a true motorsport look to your M3. Fastened seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E46.

The E46 M3 is an amazing looking car right out of the box but a common BMW issue is the height of the front vs rear bumpers. As far back as the E30, the front bumper is much lower than the rear bumper and the E46 M3 faces the same issue. With this problem the front bumper is always super low to the ground and the rear bumper looks in-complete. The ECS add-on diffuser is a unique option for balancing out the rear bumper with the height of the front bumper for a full and complete look.

Give your M3 that wild style that stands out from the crowd, and obtain a nice balanced look. This is just the start of a new line of Street Flow Diffusers diffusers that are a must have extension of your awesome ride. The diffusers come powder coated in a sleek satin-black finish, are a blast to install and fit seamlessly against the rear bumper for a professional looking install every time. The Street Flow diffuser attaches below your factory rear diffuser and exhaust of your choosing to fill out the rear end for a nice full and aggressive styling profile.

Lets take a trip together down a new and unique path. Over the years ECS has designed factory replacement ABS and Carbon Fiber diffusers for all different models of BMW's. For the factory replacements ECS focus was to take the oem characteristics and add a twist and really bring out a more aggressive look with a direct replacement diffuser. For their new line of diffusers, us as car enthusiasts wanted to design a set of diffusers that really pushed the envelope and stepped outside of our comfort zone. Our new line of add-on diffusers is a result of our engineering team and fellow enthusiasts spending time study the M3 chassis, modeling different designs, testing prototypes and making changes to get a final product that we are extremely excited to offer. The E46 M3 Street Flow Diffuser is the first in our line of new diffusers. Stay tuned for the E36 M3 and the E92 M3 diffusers next!

Features:

Adds an aggressive aesthetic in addition to the subtle factory rear diffuser
Lightweight and durable 10ga aluminum in satin black powder coat to blend with the factory trim color
Installation is secure and simple with ample adjustability built in for perfect fitment
Design:

10 ga 5052 aluminum construction
Black satin powder coat for long term corrosion resistance
5 piece design to simplify installation
Slotted mounting locations to allow for mounting adjustment
Laser cut ECS logo pre powder coat for a smooth finish
Hidden hardware for better aesthetic

Show More Show Less

ECS - Corporate Logo
T#:2408497
Part#: 51747330558
In Stock
Sale - Save 11% $ 336.99

This product was last offered at the strikethrough price on
06-14-2026

$ 299.99 USD
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Sale - Save 11%
$ 336.99

This product was last offered at the strikethrough price on
06-14-2026

$ 299.99 USD
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ECS - Corporate Logo
T#:23449746
Part#: 511172833303KT
In Stock
Sale - Save 15% $ 1,170.99

This product was last offered at the strikethrough price on
06-14-2026

$ 999.99 USD
Sale - Save 15%
$ 1,170.99

This product was last offered at the strikethrough price on
06-14-2026

$ 999.99 USD
For the factory JCW Aero bumper kits 3/2012+, works with T#2408490 as an upgraded trim package.
AUTOTECKNIC - Corporate Logo
T#:38655160
Part#: BM-0045-G82
Ships in 7 Business Days
$ 650.00 USD
Free Shipping on orders $49 and up
These Carbon fiber side splitters upgrade aerodynamics and create a bold appearance of your G82/G83 M4. Designed for optimal performance, durability, and a dynamic, track-ready aesthetic.


AUTOTECKNIC - Corporate Logo
T#:39261792
Part#: BM-0352-V2
Ships in 7 Business Days
$ 595.00 USD
$ 595.00 USD
Whether you're looking to enhance downforce or simply make a bold styling statement, this premium rear diffuser delivers in every aspect.
Dinan Carbon Fiber Rear Diffuser - A90 Supra
Call In Or Chat For Best Price!
Dinan - Corporate Logo
T#:21045556
Part#: D980-0037
Ships in 5 Business Days
11% off MSRP $ 899.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 799.99 USD
Free Shipping
11% off MSRP
$ 899.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 799.99 USD
Free Shipping
Dramatic exits come standard with this carbon fiber upgrade. The multi-piece Dinan rear diffuser spotlights the rear of the car and creates a new "floor" that visually appears to make the vehicle lower and more aggressive. Despite the diffuser encompassing the exhaust exits, great care was taken to ensure enough room was supplied to accommodate even large tipped exhausts, like Dinan's own. Additionally, the diffuser adds wrap arounds to each of the rear quarters that allows a harmonious and uniform visual continuation with the Dinan front lip and side skirts for a perfectly matched cosmetic solution. Features: 2x2 gloss twill carbon fiber manufactured to be impact resistant, durable and strong Clear coated for maximum UV protection and fade resistance Includes 3M double sided tape and mounting screws for easy installation with a clean fit and finish
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AUTOTECKNIC - Corporate Logo
T#:39531763
Part#: BM-0811
Ships in 7 Business Days
$ 394.99 USD
Free Shipping on orders $49 and up
Turner Motorsport offers the AutoTecknic Dry Carbon Rear Splitter Set for the G87 M2, providing BMW owners with a functional and stylish upgrade that enhances both performance and aesthetics.

AUTOTECKNIC - Corporate Logo
T#:21407029
Part#: ATK-BM-0400
Ships in 7 Business Days
$ 580.00 USD
$ 580.00 USD
Carbon fiber is a staple in the performance world and has been incorporated into motorsports since the early 80s. Over time companies have taken it upon themselves to create new carbon products to add to your car that may not have been originally available. Autotecknic is no different. If you're looking for a carbon addition that has been made to the highest standards with premium materials, then Autotecknic's line of carbon additions is your one-stop shop. Made to clip on the factory mounting locations and made from vacuumed carbon fiber, this diffuser is made to be durable and mount easily to your F30, improving your car's look with ease!
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AUTOTECKNIC - Corporate Logo
T#:14452852
Part#: BM-0881
Ships in 7 Business Days
$ 895.00 USD
$ 895.00 USD
This rear diffuser is AutoTecknic's newly released dry carbon fiber product for the G8X M3/ M4. The diffuser is designed to mount directly onto the lower factory mounting location for a fast and straightforward installation. Manufactured using 100% genuine 3K Twill-Weave (2X2) Pre-Preg Carbon Fiber with our signature autoclave technology, this diffuser is finished with multiple coatings of high-gloss UV-resistant clear coat. Following the weight-saving principles of motorsport ideals, we utilize the autoclave vacuum forming process to produce this diffuser with superior strength and fitment. Change your car's look and satisfy your carbon cravings today!
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AUTOTECKNIC - Corporate Logo
T#:21045549
Part#: ATK-BM-0885
Ships in 7 Business Days
$ 650.00 USD
$ 650.00 USD
Looking to change the character of your BMW? Carbon fiber means no need to paint, this diffuser will add a beautiful and sporty appearance without being overstated. Constructed of high-quality carbon fiber, this diffuser is sure to impress in every way. This carbon fiber rear diffuser is a great way of getting it done.
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Akrapovic - Corporate Logo
T#:3018048
Part#: DI-BM/CA/9/G
In Stock at Vendor
$ 2,328.99 USD
Free Shipping on orders $49 and up
The stunning carbon-fiber diffuser is offered as an option with the choice of a high-gloss or matt finish. It is a completely new design from the one that comes as standard on the car, and it gives the rear of the M8 a more aggressive and sporty feel. It shows off the Akrapovic tailpipes to their full extent and is a perfect accompaniment to the exhaust suite. Fitment notice: With Akrapovič diffuser, hands-free trunk-lid opening/closing sensor is not working.
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ECS - Corporate Logo
T#:24179121
Part#: 047898LA01KT
In Stock
Sale - Save 10% $ 448.99

This product was last offered at the strikethrough price on
06-14-2026

$ 404.09 USD
Free Shipping
Sale - Save 10%
$ 448.99

This product was last offered at the strikethrough price on
06-14-2026

$ 404.09 USD
Free Shipping

ECS Exclusive Proudly Offered at Turner Motorsport!

Add-on diffuser to deliver a true motorsport look to your M3. Fastened seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E92.

The E92 M3 is an amazing looking car right out of the box but a common BMW issue is the height of the front vs rear bumpers. As far back as the E30, the front bumper is much lower than the rear bumper and the E92 M3 faces the same issue. With this problem the front bumper is always super low to the ground and the rear bumper looks in-complete. The ECS add-on diffuser is a unique option for balancing out the rear bumper with the height of the front bumper for a full and complete look. The E92 diffuser also features an optional center fin design to dial in the aesthetic you prefer!

Give your M3 that wild style that stands out from the crowd, and obtain a nice balanced look. This is just the start of a new line of Street Flow Diffusers diffusers that are a must have extension of your awesome ride. The diffusers come powder coated in a sleek satin-black finish, are a blast to install and fit seamlessly against the rear bumper for a professional looking install every time. The Street Flow diffuser attaches below your factory rear diffuser and exhaust of your choosing to fill out the rear end for a nice full and aggressive styling profile.

Lets take a trip together down a new and unique path. Over the years ECS has designed factory replacement ABS and Carbon Fiber diffusers for all different models of BMW's. For the factory replacements ECS focus was to take the oem characteristics and add a twist and really bring out a more aggressive look with a direct replacement diffuser. For their new line of diffusers, us as car enthusiasts wanted to design a set of diffusers that really pushed the envelope and stepped outside of the comfort zone. ECS's new line of add-on diffusers is a result of the engineering team and fellow enthusiasts spending time study the M3 chassis, modeling different designs, testing prototypes and making changes to get a final product that we are extremely excited to offer. The E92 M3 Street Flow Diffuser is part of a new line of diffusers. Check out the diffusers in the line-up including the E36 and the E46 M3 variations!

Features:

Optional center fin included
Adds an aggressive aesthetic in addition to the subtle factory rear diffuser
Lightweight and durable 10ga aluminum in satin black powder coat to blend with the factory trim color
Installation is secure and simple with ample adjustability built in for perfect fitment
Design:

10 ga 5052 aluminum construction
Black satin powder coat for long term corrosion resistance
5 piece design to simplify installation
Slotted mounting locations to allow for mounting adjustment
Laser cut ECS logo pre powder coat for a smooth finish
Hidden hardware for better aesthetic

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ECS - Corporate Logo
T#:638447
Part#: E9XM33DCFDIF
Back Ordered
$ 578.99 USD
Free Shipping
$ 578.99 USD
Free Shipping
Looking to add a bit of aggressive styling to your BMW? The ECS Tuning Carbon Fiber Rear Diffuser is just what you need! Featuring a UV-resistant clear coat and 2x2 style carbon weave, this diffuser is the perfect addition to make your M3 stand out.
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Akrapovic - Corporate Logo
T#:13760061
Part#: DI-BM/CA/6
Back Ordered
$ 2,486.99 USD
Free Shipping on orders $49 and up
Designed to make the X4 M / X4 M Competition stand out from the crowd even more, the visual delight of Akrapovič exhaust systems can be further enhanced with the addition of an optional, ABE type-approved carbon fibre rear diffuser. It’s beautifully handcrafted from the finest materials and is designed to enhance the exclusive look of the carbon tailpipes. Available in high gloss finish. Warning: Cannot fit with genuine trailer tow hitch. With Akrapovič diffuser, hands-free trunk-lid opening/closing sensor is not working.
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ECS - Corporate Logo
T#:383337
Part#: 012196ECS12A
Back Ordered
Sale - Save 10% $ 340.99

This product was last offered at the strikethrough price on
06-13-2026

$ 306.89 USD
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Sale - Save 10%
$ 340.99

This product was last offered at the strikethrough price on
06-13-2026

$ 306.89 USD
Free Shipping

BMW Performance Style Rear Diffuser

Enhance the rear aesthetics of your BMW with a striking BMW Performance Style Rear Diffuser. Whether you're replacing an original or complementing your existing bumper, this diffuser exudes an aggressive style that stands out. Designed to accentuate your vehicle's rear while following its natural lines, it ensures a distinctive appearance. Enjoy a hassle-free installation with guaranteed fitment, elevating your BMW's visual appeal effortlessly.

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Akrapovic - Corporate Logo
T#:558675
Part#: DI-BM/CA/5/G/RS
Back Ordered
$ 1,931.99 USD
Free Shipping
$ 1,931.99 USD
Free Shipping

The Akrapovic Evolution and Slip-On line exhaust systems can be further enhanced with an optional hand-crafted carbon-fiber rear diffuser. Developed by Akrapovic’s Design Department, this stunning diffuser, crafted from materials developed through Akrapovic’s racing involvement, is designed to perfectly fit the lines of the unique tailpipes of the Slip-On or Evolution systems, as well as complement the sleek and sporty shape of the F90 M5 BMW.

**High Gloss finish with a red and white Akrapovic logo

This item fits the following BMWs: 
2018+ F90 BMW M5

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Akrapovic - Corporate Logo
T#:2706195
Part#: DI-BM/CA/7/G
Back Ordered
$ 2,334.99 USD
$ 2,334.99 USD
The stunning carbon-fibre diffuser is offered as an option with the choice of a high-gloss or matt finish. It is a completely new design from the one that comes as standard on the car, and it gives the rear of the M8 a more aggressive and sporty feel. It shows off the tailpipes to their full extent and is a perfect accompaniment to the side mirror caps.
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ECS - Corporate Logo
T#:19230368
Part#: 511172833301KT
In Stock
Sale - Save 10% $ 541.99

This product was last offered at the strikethrough price on
06-14-2026

$ 487.75 USD
Sale - Save 10%
$ 541.99

This product was last offered at the strikethrough price on
06-14-2026

$ 487.75 USD

Upgrade your MINI's aesthetics with the JCW Aerodynamic Package Trim in gloss black, designed to enhance your vehicle's aero package. Whether for an enhanced look or to replace worn-out parts, this trim, made from gloss black textured plastic, seamlessly matches your MINI's existing trim.

Renowned for its Japan-style full body painted appearance, Turner Motorsport offers a hassle-free solution. No more frequent applications of trim care or black treatment when it rains, thanks to this trim's durable construction.

Mimicking the factory design trim, this kit includes factory-style tabs for an easy and secure installation. The comprehensive package comprises the front spoiler set, side skirt set lower trim, and rear bumper extension set, all in gloss black, transforming your MINI's appearance.

Note: Does not include GP2 rear diffuser.

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ECS - Corporate Logo
T#:19230367
Part#: 511172833302KT
In Stock
Sale - Save 10% $ 833.99

This product was last offered at the strikethrough price on
06-14-2026

$ 750.51 USD
Sale - Save 10%
$ 833.99

This product was last offered at the strikethrough price on
06-14-2026

$ 750.51 USD

Upgrade your MINI's aero package with the JCW Aerodynamic Package Trim in gloss black, designed to elevate your vehicle's appearance. This trim serves as an ideal replacement for a damaged or worn-out unit or as an enhancement for a more dynamic aesthetic.

Crafted from gloss black textured plastic, this trim seamlessly complements your MINI's existing trim, creating a cohesive and polished look. Known for its Japan style full body painted appearance, Turner Motorsport offers an effortless solution, eliminating the need for frequent black care maintenance.

With meticulous attention to detail, this kit adheres to the factory design trim, incorporating factory-style tabs for a secure fit. The comprehensive kit includes front spoiler set, all four Euro-style wheel arches with clips, side skirt set lower trim, and rear bumper extension set, transforming your USA Spec MINI's wheel arches into a sleek Euro look by eliminating front amber and rear red side markers.

Note: Does not include GP2 rear diffuser.

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ECS - Corporate Logo
T#:10128411
Part#: 51747330558GB
In Stock
Sale - Save 11% $ 336.99

This product was last offered at the strikethrough price on
06-14-2026

$ 299.99 USD
Free Shipping
Sale - Save 11%
$ 336.99

This product was last offered at the strikethrough price on
06-14-2026

$ 299.99 USD
Free Shipping

Upgrade your MINI's appearance with the JCW GP II Rear Diffuser Kit, designed to add a high-performance look to your vehicle. This kit allows you to seamlessly integrate the JCW GP II rear diffuser with the JCW Aero rear bumper section, enhancing the overall aesthetic of your MINI. Designed to match the gloss black JCW aero kit trims, this kit includes textured OEM finishes on the underside to maintain a Genuine MINI look. Whether you're adding it to a stock JCW bumper or pairing it with other gloss black accessories, this kit ensures a sleek and cohesive design.

  • Adds a high-performance look to your MINI
  • Seamless integration with JCW Aero rear bumper section
  • Matches gloss black JCW aero kit trims
  • Textured OEM finish maintains Genuine MINI appearance
  • Includes all necessary brackets and hardware for installation
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ECS - Corporate Logo
T#:383336
Part#: 012196ECS11A
In Stock
Sale - Save 21% $ 327.99

This product was last offered at the strikethrough price on
06-13-2026

$ 258.99 USD
Limited Qty Sale
Free Shipping
Sale - Save 21%
$ 327.99

This product was last offered at the strikethrough price on
06-13-2026

$ 258.99 USD
Limited Qty Sale
Free Shipping

Upgrade your BMW F30's appearance with the BMW F30 M Performance Style Diffuser - Quad Exhaust. This high-quality diffuser is designed to replicate the sleek styling of the M Performance models, enhancing the look of your BMW F30. With its quad exhaust design and precise fitment, this diffuser is a perfect choice for those seeking to add a sporty touch to their vehicle.

  • Replicates the sleek styling of the M Performance models
  • Enhances the appearance of your BMW F30
  • Quad exhaust design for a sporty look
  • Precise fitment ensures easy installation
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AUTOTECKNIC - Corporate Logo
T#:14419807
Part#: ATK-BM-0340
Ships in 7 Business Days
$ 850.00 USD
$ 850.00 USD
Here's AutoTecknic's newly released Dry Carbon Fiber Competition Sport Rear Diffuser for the F90 M5. It's designed to mount directly onto the lower factory mounting location for a straightforward and swift installation. This AutoTecknic Dry Carbon Competition Sport Rear Diffuser comes with durable, precise, one-piece dry carbon mounting locations. The diffuser is made with our signature autoclave technology for the ultimate lightweight, high durability, and precise fitment. Made from high-quality dry carbon fiber, this product is durable and ready to give your car some more personality!
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Akrapovic - Corporate Logo
T#:37993409
Part#: DI-BM/CA/9/CF
In Stock at Vendor
$ 2,369.99 USD
$ 2,369.99 USD

Akrapovic Rear Forged Carbon Fibre Diffuser - Matte Finish | BMW G80 M3 G82 M4

The Akrapovic Rear Forged Carbon Fibre Diffuser - Matte Finish | BMW G80 M3 G82 M4 is a premium accessory designed to transform the look and performance of your BMW. Expertly hand-crafted in-house with ABE type approval, this chopped carbon fibre diffuser is engineered to accentuate the Akrapovič exhaust tailpipes, delivering a bold and sporty aesthetic. The matte finish adds a modern, sophisticated touch, while the lightweight construction ensures improved performance. Compatible with BMW G80 M3, G82 M4, xDrive, CSL, LCI, and M4 (G83) Competition models, this diffuser is a perfect blend of style and functionality.

Key Benefits:

  • Enhances the sporty and aggressive appearance of BMW G80 M3 and G82 M4
  • Showcases Akrapovič exhaust tailpipes for a standout design
  • Matte finish adds a modern and sophisticated aesthetic
  • Lightweight forged carbon fibre construction improves performance and durability
  • Hand-crafted with precision and ABE type approval for unmatched quality
  • Fits xDrive, CSL, LCI, and M4 (G83) Competition models for versatility

Upgrade your BMW with the Akrapovic Rear Forged Carbon Fibre Diffuser - Matte Finish and enjoy a perfect blend of style, performance, and craftsmanship.

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AUTOTECKNIC - Corporate Logo
T#:21275575
Part#: ATK-BM-0353
Ships in 7 Business Days
$ 500.00 USD
$ 500.00 USD
Carbon fiber is a staple in the performance world and has been incorporated into motorsports since the early 80s. Over time companies have taken it upon themselves to create new carbon products to add to your car that may have not been originally available. Autotecknic is no different. If you're looking for a carbon addition that has been made to the highest standards with premium materials, then Autotecknic's line of carbon additions is your one-stop shop. Add some carbon to your M-Performance rear valance! Dry carbon fiber's name comes from its manufacturing process. Dry carbon fiber is formed by using a "pre-preg" or impregnated piece of carbon materials. This piece of carbon is first placed into a mold and then into a sealed autoclave to cure properly. This method creates the least amount of waste and forms a lighter version of carbon than the “wet” method. The autoclave vacuuming process of making dry carbon means fewer pinholes and virtually no air pockets in the carbon. Dry carbon is the highest-quality version of carbon fiber products that are produced.
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AUTOTECKNIC - Corporate Logo
T#:44224436
Part#: A-SQ-T-336
Ships in 7 Business Days
$ 1,199.99 USD
$ 1,199.99 USD

Dinan - Corporate Logo
T#:23020158
Part#: D980-0049
Back Ordered
11% off MSRP $ 1,068.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 949.99 USD
Free Shipping
11% off MSRP
$ 1,068.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 949.99 USD
Free Shipping
Rather than replace the full diffuser and have potential fitment challenges with various exhaust options Dinan has opted to retain the factory gloss black lower portion of the diffuser and only replace the upper diffuser surround with a carbon fiber accent piece. This solution not only guarantees the carbon cosmetics will always play well with any personalization of the exhaust that is adopted but also offers an economical option compared to much pricier alternatives. Together with the Dinan Rear Side Splitters, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace. Features: 2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact-resistant, durable, and strong Clear-coated for maximum UV protection and fade resistance Utilizes factory mounting tabs for an easy installation with a clean fit and finish Pair together with the Dinan Rear Side Splitters to complete the full rear look
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Dinan - Corporate Logo
T#:23020150
Part#: D980-0050
Ships in 5 Business Days
11% off MSRP $ 658.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 584.99 USD
Free Shipping
11% off MSRP
$ 658.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 584.99 USD
Free Shipping
Dinan Carbon Fiber Rear Side Splitters (rear winglets) offer a simple straightforward solution to enhancing the rear quarters of your G82/G83 M4. Together with the Dinan Rear Diffuser Surround, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace. Features: 2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact-resistant, durable, and strong Clear-coated for maximum UV protection and fade resistance Includes mounting screws and also utilizes factory mounting tabs for an easy installation with a clean fit and finish Pair together with the Dinan Rear Diffuser Surround to complete the full rear look
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AUTOTECKNIC - Corporate Logo
T#:38655158
Part#: BM-0045-G80
Ships in 7 Business Days
$ 650.00 USD
Free Shipping on orders $49 and up
Boost the aerodynamics and bold appearance of your G80/G81 M3 with the AutoTecknic Dry Carbon Rear Splitter Set, designed for optimal performance, durability, and a dynamic, track-ready aesthetic.
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AUTOTECKNIC - Corporate Logo
T#:14419866
Part#: BM-0880
Ships in 7 Business Days
$ 850.00 USD
$ 850.00 USD
This rear diffuser is AutoTecknic's newly released dry carbon fiber product for the G8X M3/ M4. The diffuser is designed to mount directly onto the lower factory mounting location for a fast and straightforward installation. Manufactured using 100% genuine 3K Twill-Weave (2X2) Pre-Preg Carbon Fiber with our signature autoclave technology, this diffuser is finished with multiple coatings of high-gloss UV-resistant clear coat. Following the weight-saving principles of motorsport ideals, we utilize the autoclave vacuum forming process to produce this diffuser with superior strength and fitment.
Show More Show Less