Find Parts That Fit Your Vehicle

ECS 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?
Sort By:

M3 Street Flow Rear Diffuser - E36
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:23947136
Part#: 047602LA01KT
In Stock
Sale - Save 32% $ 439.99
$ 299.00 USD
Free Shipping on orders $49 and up
Sale - Save 32% $ 439.99
$ 299.00 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
Gloss Black Rear Diffuser - E82/E88 M-Sport
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:20485540
Part#: 040790LA01-01
In Stock
Sale - Save 25% $ 385.99
$ 289.49 USD
Sale - Save 25% $ 385.99
$ 289.49 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
CSL Style Carbon Fiber Diffuser
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:391782
Part#: E46CSLCFDIFF
Back Ordered
Sale - Save 20% $ 490.99
$ 392.79 USD
Free Shipping
Sale - Save 20% $ 490.99
$ 392.79 USD
Free Shipping
Half carbon diffuser to complete your CSL look

Textured Black Rear Diffuser - E82/E88 M-Sport
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:20485541
Part#: 040790LA01-02
In Stock
Sale - Save 35% $ 385.99
$ 250.89 USD
Free Shipping on orders $49 and up
Sale - Save 35% $ 385.99
$ 250.89 USD
Free Shipping on orders $49 and up

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#:23449746
Part#: 511172833303KT
In Stock
Sale - Save 44% $ 1,108.99
$ 621.45 USD
Sale - Save 44% $ 1,108.99
$ 621.45 USD
For the factory JCW Aero bumper kits 3/2012+, works with T#2408490 as an upgraded trim package.
Street Flow Rear Diffuser - E92 M3
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:24179121
Part#: 047898LA01KT
In Stock
Sale - Save 42% $ 430.99
$ 249.99 USD
Free Shipping
Sale - Save 42% $ 430.99
$ 249.99 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

F30 M Performance Style Diffuser - dual Exhaust
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:383337
Part#: 012196ECS12A
Ships in 5 Business Days
Sale - Save 15% $ 323.99
$ 275.39 USD
Free Shipping
Sale - Save 15% $ 323.99
$ 275.39 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.

Show More Show Less
JCW GP2 Rear Center Diffuser Retrofit Kit - Gloss Black
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:10128411
Part#: 51747330558GB
In Stock
Sale - Save 4% $ 319.99
$ 307.69 USD
Free Shipping
Sale - Save 4% $ 319.99
$ 307.69 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
Show More Show Less

JCW R56/R57/R58/R59 Aero Trim Gloss Black Kit
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:19230368
Part#: 511172833301KT
In Stock
Sale - Save 34% $ 512.99
$ 338.47 USD
Sale - Save 34% $ 512.99
$ 338.47 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.

Show More Show Less

ECS - Corporate Logo
T#:19230367
Part#: 511172833302KT
In Stock
Sale - Save 41% $ 788.99
$ 468.45 USD
Sale - Save 41% $ 788.99
$ 468.45 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.

Show More Show Less
BMW F30 M Performance Style Diffuser - Quad Exhaust
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:383336
Part#: 012196ECS11A
In Stock
Sale - Save 21% $ 311.99
$ 246.99 USD
Limited Qty Sale
Free Shipping
Sale - Save 21% $ 311.99
$ 246.99 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
Show More Show Less
ECS Street Flow Rear Diffuser - E46 M3
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:20815172
Part#: 047616LA01KT
In Stock
Sale - Save 40% $ 499.99
$ 299.99 USD
Free Shipping
Sale - Save 40% $ 499.99
$ 299.99 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


G30 rear diffuser
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:31522976
Part#: 011818ECS03
Ships in 5 Business Days
Sale - Save 10% $ 419.99
$ 377.99 USD
Sale - Save 10% $ 419.99
$ 377.99 USD
BMW F30 M Performance Style diffuser - Single Exit
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:383335
Part#: 012196ECS10A
Ships in 5 Business Days
Sale - Save 20% $ 311.99
$ 249.59 USD
Sale - Save 20% $ 311.99
$ 249.59 USD

Upgrade the rear appearance of your BMW with the BMW F30 M Performance Style diffuser - Single Exit. This high-quality diffuser enhances the sporty look of your BMW F30 while adding a touch of aggression. Engineered specifically for BMW F30 models, this diffuser offers improved aerodynamics and airflow. Elevate the style and performance of your BMW with this premium M Performance style diffuser.

  • Enhances the sporty appearance of your BMW F30
  • Adds aggression and style to the rear of your BMW
  • Engineered specifically for BMW F30 models
  • Improves aerodynamics and airflow for enhanced performance
Show More Show Less