Rear Diffuser for BMW G82 M4 S58 3.0L

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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#: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
Free Shipping
Sale - Save 25%
$ 536.99

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

$ 402.74 USD
Free Shipping

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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AUTOTECKNIC - Corporate Logo
T#:14419810
Part#: BM-0341
In Stock
$ 600.00

This product was last offered at the strikethrough price on
08-10-2026

$ 528.00 USD
Limited Qty Sale
$ 600.00

This product was last offered at the strikethrough price on
08-10-2026

$ 528.00 USD
Limited Qty Sale
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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Suvneer - Corporate Logo
T#:25772525
Part#: G8XRRSPL-SUV
Ships in 5 Business Days
Sale - Save 28% $ 295.00

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

$ 211.76 USD
Free Shipping on orders $49 and up
Sale - Save 28%
$ 295.00

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

$ 211.76 USD
Free Shipping on orders $49 and up
Introducing the Suvneer Motorsports™ G8x M3/M4 Carbon Fiber Rear Bumper Splitter – an extraordinary enhancement designed to augment the rear aesthetics of your BMW G8x M3 or M4. Meticulously crafted with a focus on both style and performance, these carbon fiber rear bumper splitters seamlessly marry form and function, making a powerful visual statement on the road. Crafted from top-tier carbon fiber materials, these rear bumper splitters contribute to the overall lightweight construction of your vehicle while exuding a modern and sporty appeal. The carbon fiber build ensures not only durability and strength but also a sleek appearance that perfectly complements the dynamic nature of the BMW G8x M3/M4. Choose the Suvneer Motorsports™ G8x M3/M4 Carbon Fiber Rear Bumper Splitter for a sophisticated blend of form and function. Elevate your BMW G8x M3/M4's presence on the road with these premium carbon fiber splitters that exemplify precision engineering and a commitment to delivering a stylish and performance-driven enhancement for your driving experience. Key Features: Material: High-quality dry carbon fiber Precision Fitment: Designed for the G8x M3 / M4 chassis for a seamless integration Lightweight: Carbon fiber construction reduces weight while maintaining strength Aerodynamic Enhancement: Improves airflow and downforce for better stability Sleek Design: 2-piece diffuser design adds a sporty and aggressive look to your vehicle We encourage customers to seek professional installation since equipping these products will require the removal of parts currently installed, to better secure fitment to your vehicle.
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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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ADRO INC. - Corporate Logo
T#:41526348
Part#: A14A40-1301
Ships in 3 Business Days
$ 2,950.00 USD
$ 2,950.00 USD
Make that quad exhaust pop even more with the ADRO carbon fiber rear diffuser for the G82 BMW M4. Featuring a more aggressive design, carefully engineered aero, and a beautiful carbon fiber finish, this is by far the highest quality and most aggressive rear diffuser currently available for the G82 platform. *Does NOT fit M Performance Center Exhaust*
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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.

Vivid Racing - Corporate Logo
T#:7953020
Part#: VR-G80M-610
Ships in 10 Business Days
$ 1,095.00 USD
$ 1,095.00 USD
Enhance the rear of your BMW M3 G80 | M4 G82/83 with the new VR Aero carbon fiber rear diffuser. Carbon fiber diffusers have been a popular upgrade for many years on almost all the BMW M3 variants. Its a great way to further accentuate upgraded exhaust systems and give the M car a more stout look. The VR Aero carbon fiber rear diffuser for the BMW M4 was designed utilizing 3D scanning and CAD programs. VR Aero set out to achieve perfection by delivering precise fitting carbon fiber that requires no modification to install. The elegant 2x2 (3K Twill Weave) will grab your eyes and draw you closer to the glossy finish that shows the depth of the weave. Using pre-preg carbon allows for the rear diffuser to have a sturdy construction while giving it the lightweight property everyone knows and loves. VR Aero matches the OEM quality that BMW M4 G82 owners insist on by bringing the best product to the market. UV-resistant epoxy eliminates the chances of the rear diffuser getting yellow and hazy over time. Commonly seen in cheaper carbon fiber, a yellow haze can form after being exposed to UV rays. The glossy clear coat also adds another layer of protection against the elements. Features: 3K 2x2 twill-weave construction Pre-preg dry carbon fiber is 60% lighter and significantly stronger than standard layups. Utilization of 3D modeling offers superior fitment The autoclave process increases durability and longevity UV resistant resin prevents yellowing and hazing of the fibers Marvelous shine thanks to the glossy clear coat OEM-Plus manufacturing and appearance No modification is required for installation
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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.
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Suvneer - Corporate Logo
T#:51356099
Part#: G8XSUVCFDIFTRAY
Ships in 5 Business Days
New Item
$ 825.00

This product was last offered at the strikethrough price on
08-17-2026

$ 715.00 USD
$ 715.00 USD
The Suvneer Motorsports™ Carbon Fiber Undertray is the final piece of the puzzle for a show-quality G80 or G82.

Dinan Carbon Fiber Rear Diffuser Surround - G80/G82/G83
Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes
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 Carbon Fiber Rear Side Splitters - G82/G83
Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes
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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M Performance Style Dry-Carbon Fiber Rear Diffuser - G80 M3/G82 M4 ...
For Vehicles with M-Performance Style Center Exhaust
Suvneer - Corporate Logo
T#:6212282
Part#: G8XCFDIF
Ships in 5 Business Days
$ 750.00

This product was last offered at the strikethrough price on
08-18-2026

$ 730.00 USD
$ 730.00 USD
M-Performance inspired matte black plastic diffuser for G80 M3/G82 M4. Direct bolt-on, no modification required. Composed of dry-carbon fiber.


ADRO INC. - Corporate Logo
T#:27638764
Part#: A14A50-1301
Ships in 3 Business Days
$ 2,950.00 USD
$ 2,950.00 USD
Make that quad exhaust pop even more with the ADRO carbon fiber rear diffuser for the G80 BMW M3. Featuring a more aggressive design, carefully engineered aero, and a beautiful carbon fiber finish, this is by far the highest quality and most aggressive rear diffuser currently available for the G80 platform. *Does NOT fit M Performance Center Exhaust*
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Suvneer - Corporate Logo
T#:25308209
Part#: G8XSUVCFDIF
Ships in 5 Business Days
$ 995.00 USD
$ 995.00 USD
Introducing the Suvneer Motorsports™ G8x Carbon Fiber Diffuser, a sleek and performance-driven enhancement for your vehicle. Crafted with precision and innovation, this diffuser is designed specifically for G8x series cars, delivering a perfect blend of aesthetics and aerodynamics. Elevate your driving experience with the Suvneer Motorsports™ G8x M4 / M4 Carbon Rear Diffuser – where cutting-edge design meets uncompromising performance, setting a new standard for automotive enthusiasts who seek the perfect fusion of style and speed. The G8x M4 / M4 Carbon Fiber Diffuser features a meticulously engineered design that not only enhances the visual appeal of your car but also improves aerodynamic efficiency. Its carefully crafted contours are optimized to reduce drag and enhance stability at higher speeds, providing a race-inspired feel on the road. Key Features: Material: High-quality dry carbon fiber Precision Fitment: Designed for the G8x M3 / M4 chassis for a seamless integration Lightweight: Carbon fiber construction reduces weight while maintaining strength Aerodynamic Enhancement: Improves airflow and downforce for better stability Sleek Design: 3-piece diffuser design adds a sporty and aggressive look to your vehicle Build Material: Fiber-Reinforced Polymer and Glossy Carbon Fiber Coating NOTE: **This will require you to install wiring to make the brake light function.** We encourage customers to seek professional installation since equipping these products will require the removal of parts currently installed, to better secure fitment to your vehicle.
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