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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 Textured ABS Matte Black Diffuser - E36 M3 ...
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Turner Motorsport - Corporate Logo
T#:6258334
Part#: 006706LA10KT
In Stock
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 ABS Diffuser - E46 M3
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Turner Motorsport - Corporate Logo
T#:597333
Part#: 028979TMS01
In Stock
Sale - Save 20% $ 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 Smooth ABS Matte Black Diffuser - E36 M3
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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
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$ 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 Carbon Fiber Rear Diffuser - F87 M2
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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
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$ 575.19 USD
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$ 718.99

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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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Gloss Black Rear Diffuser - G80/G82/G83 M3/M4
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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
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$ 402.74 USD
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$ 536.99

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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 Carbon Fiber Rear Diffuser - F8x
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Turner Motorsport - Corporate Logo
T#:584863
Part#: 023241TMS01
In Stock
Sale - Save 20% $ 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 Carbon Fiber Diffuser - E46 M3
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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
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$ 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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Carbon Fiber Rear Diffuser - G87 M2
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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 Gloss Black ABS Diffuser - G20 M340i/xDrive
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Does not fit factory exhaust tips
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
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$ 457.29 USD
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$ 537.99

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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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Gloss Black Rear Diffuser - G87 M2
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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
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$ 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
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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
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$ 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!
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Turner Carbon Fiber Add-On Lower Diffuser Kit - F8X
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Only for use with T#584863
Turner Motorsport - Corporate Logo
T#:587860
Part#: 24623TMS01KT
Ships in 1 Business Day
Sale - Save 3% $ 1,367.99

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$ 1,326.95 USD
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$ 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 Carbon Upper & Lower Rear Diffuser Kit - F8X
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Turner Motorsport - Corporate Logo
T#:587258
Part#: 24623TMSKT
Ships in 1 Business Day
Sale - Save 15% $ 2,099.99

This product was last offered at the strikethrough price on
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$ 1,784.99 USD
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$ 2,099.99

This product was last offered at the strikethrough price on
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$ 1,784.99 USD
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Both Upper & Lower Diffusers paired together to save you money!
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Dinan Carbon Fiber Rear Side Splitters - G80
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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
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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
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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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Dinan Carbon Fiber Rear Diffuser - A90 Supra
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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
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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
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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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Dinan Carbon Fiber Rear Diffuser Surround - G80/G82/G83
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Dinan - Corporate Logo
T#:23020158
Part#: D980-0049
Ships in 5 Business Days
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
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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
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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 Carbon Fiber Rear Side Splitters - G82/G83
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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
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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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