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BMW Widebody Kits

If you're looking to completely transform the look of your BMW, you might be interested in a full aero package. Some of these are only for the most dedicated to track styling and aerodynamics, requiring irreversible modifications. Those afraid of commitment need not apply.
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M3 Street Flow Rear Diffuser - E36
10X Entries Into Our F80 M3 Sweepstakes
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
Free Shipping on orders $49 and up

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

Show More Show Less
ECS Street Flow Rear Diffuser - E46 M3
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:20815172
Part#: 047616LA01KT
Ships in 1 day
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
JCW Pro Style Rear Spoiler Extensions Gloss RED - Pair
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:27138582
Part#: 51192339041RD
Special Order: No Guaranteed ETA
Sale - Save 3% $ 62.99

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

$ 61.10 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 62.99

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

$ 61.10 USD
Free Shipping on orders $49 and up

Genuine MINI - Corporate Logo
T#:522343
Part#: 51192339038
In Stock
6% off MSRP $ 486.00

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

$ 456.99 USD
Free Shipping
6% off MSRP
$ 486.00

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

$ 456.99 USD
Free Shipping

ECS - Corporate Logo
T#:2408490
Part#: 51192154643
Special Order: No Guaranteed ETA
Sale - Save 22% $ 1,664.99

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

$ 1,299.99 USD
Free Shipping
Sale - Save 22%
$ 1,664.99

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

$ 1,299.99 USD
Free Shipping
Upgrade to the JCW style body kit
Genuine MINI - Corporate Logo
T#:197032
Part#: 51627382172
Ships in 4 Business Days
11% off MSRP $ 70.27

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

$ 62.55 USD
Free Shipping on orders $49 and up
11% off MSRP
$ 70.27

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

$ 62.55 USD
Free Shipping on orders $49 and up
Genuine Bmw Black Band Spoiler, Front Ri

Genuine MINI - Corporate Logo
T#:197031
Part#: 51627382171
Ships in 4 Business Days
11% off MSRP $ 70.27

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

$ 62.55 USD
Free Shipping
11% off MSRP
$ 70.27

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

$ 62.55 USD
Free Shipping
Genuine Bmw Black Band Spoiler, Front Le
Street Flow Rear Diffuser - E92 M3
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:24179121
Part#: 047898LA01KT
Ships in 4 Business Days
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

Show More Show Less

Genuine MINI - Corporate Logo
T#:197217
Part#: 51777352152
Ships in 4 Business Days
7% off MSRP $ 224.99

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

$ 209.99 USD
7% off MSRP
$ 224.99

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

$ 209.99 USD
Genuine Bmw Rocker Panel Cover Lower Sec

Genuine MINI - Corporate Logo
T#:197216
Part#: 51777352151
Ships in 6 Business Days
7% off MSRP $ 224.99

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

$ 209.99 USD
7% off MSRP
$ 224.99

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

$ 209.99 USD
Genuine Bmw Rocker Panel Cover Lower Sec
JCW Body Kit - F56 LCI2 MINI Cooper /S/JCW
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:6397740
Part#: F56JCWBODYKITLCI
Special Order: No Guaranteed ETA
Sale - Save 3% $ 1,822.99

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

$ 1,768.30 USD
Sale - Save 3%
$ 1,822.99

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

$ 1,768.30 USD
Rear M5/M-Tech Bumper Conversion - E39 Touring
10X Entries Into Our F80 M3 Sweepstakes
For Touring Models Only
ECS - Corporate Logo
T#:376082
Part#: E39WGNMTECHRR
Back Ordered
$ 701.99 USD
$ 701.99 USD
For Touring Models Only


M3 Replica Body Kit - E36
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:381370
Part#: ECSM3BODYKTKT
Back Ordered
$ 844.99 USD
$ 844.99 USD

Transform your BMW into an M3 body style effortlessly with this comprehensive kit. Included are front and rear bumpers along with side skirts for a seamless conversion experience. Elevate the transformation further by exploring ECS's range of M3 replica mirrors, available for both 2-door (ES10071) and 4-door (ES10070) models.

  • Complete body kit for non-M to M3 conversion
  • Includes front and rear bumpers along with side skirts
  • Option to upgrade with M3 replica mirrors for 2-door and 4-door models
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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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JCW R56/R57/R58/R59 Aero Trim Gloss Black Kit
10X Entries Into Our F80 M3 Sweepstakes
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 JCW Body Kit - F56 MINI Cooper S/JCW
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:2528151
Part#: F56JCWBODYKIT
In Stock
Sale - Save 31% $ 1,892.99

This product was last offered at the strikethrough price on
09-02-2026

$ 1,299.99 USD
Free Shipping
Sale - Save 31%
$ 1,892.99

This product was last offered at the strikethrough price on
09-02-2026

$ 1,299.99 USD
Free Shipping

ECS JCW Body Kit - F55
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:2528150
Part#: F55JCWBODYKIT
In Stock
Sale - Save 57% $ 1,854.99

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

$ 800.00 USD
Free Shipping
Sale - Save 57%
$ 1,854.99

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

$ 800.00 USD
Free Shipping
Genuine MINI - Corporate Logo
T#:522344
Part#: 51192339041
Ships in 4 Business Days
5% off MSRP $ 99.00

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

$ 93.99 USD
Free Shipping
5% off MSRP
$ 99.00

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

$ 93.99 USD
Free Shipping

Genuine MINI - Corporate Logo
T#:197231
Part#: 51777382182
Ships in 4 Business Days
7% off MSRP $ 281.99

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

$ 261.99 USD
7% off MSRP
$ 281.99

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

$ 261.99 USD
Genuine Bmw Rocker Panel Trim, Primered,
Genuine MINI - Corporate Logo
T#:197230
Part#: 51777382181
Ships in 6 Business Days
7% off MSRP $ 281.99

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

$ 261.99 USD
7% off MSRP
$ 281.99

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

$ 261.99 USD
Genuine Bmw Rocker Panel Trim, Primered,

Genuine MINI - Corporate Logo
T#:77522
Part#: 51120152925
Ships in 8 Business Days
3% off MSRP $ 31.99

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

$ 30.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 31.99

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

$ 30.99 USD
Free Shipping on orders $49 and up
Genuine MINI REAR BRACKET

Genuine MINI - Corporate Logo
T#:88153
Part#: 51192180854
Ships in 8 Business Days
$ 75.99 USD
Free Shipping on orders $49 and up
Genuine MINI OFF-ROAD DESIGN
M4 Style Front Bumper For E92 LCI Without Fog Lights
10X Entries Into Our F80 M3 Sweepstakes
For LCI Models Only
ECS - Corporate Logo
T#:1271575
Part#: E92M4FTNOFOGIN
Ships on Sep 21, 2026
$ 579.99 USD
$ 579.99 USD
Add M4 styling to your LCI E92 or E93 3-Series with this OE quality M4-Style front bumper. Made from high-quality polypropylene, this front bumper has the same fit and finish you can expect from the factory! -Does not include fog lights
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JCW Pro Style Rear Spoiler Extensions Gloss Black - Pair
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:27138581
Part#: 51192339041GB
Special Order: No Guaranteed ETA
Sale - Save 3% $ 62.99

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

$ 61.10 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 62.99

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

$ 61.10 USD
Free Shipping on orders $49 and up