Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

BMW M3 Rear Bumper Diffusers

Sort By
Filter By
Return to Top

E36 LTW Inspired Carbon Spoiler & Street Flow Rear Diffuser - Coupe

ES#4876644 - 008781LA01EBKT - E36 LTW Inspired Carbon Spoiler & Street Flow Rear Diffuser - Coupe - Classic LTW styling with an aggressive add-on rear diffuser to complete the rear end of your E36 coupe. - Enthusiast Bundles - BMW

Classic LTW styling with an aggressive add-on rear diffuser to complete the rear end of your E36 coupe. Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4876644
Mfg#:
008781LA01EBKT
In Stock
ON SALE! SAVE 23%
$2202.99

This product was last offered at the strikethrough price on
01-18-2026

$1699.00 USD
This product is lifetime replacement eligible Lifetime Replacement

ADRO Carbon Fiber Rear Diffuser - E92 M3

ES#5424343 - A14A20-1301 - ADRO Carbon Fiber Rear Diffuser - E92 M3 - Improve the appearance of your M3 with this carbon fiber rear diffuser from ADRO - ADRO INC. - BMW

Improve the appearance of your M3 with this carbon fiber rear diffuser from ADRO affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ADRO INC. - Corporate Logo
ES#:
5424343
Mfg#:
A14A20-1301
In Stock
$1690.00 USD

E92 M3 Street Flow Rear Diffuser & Carbon Fiber Rear Spoiler

ES#4876607 - 047898LAEBKT - E92 M3 Street Flow Rear Diffuser & Carbon Fiber Rear Spoiler - Transform the rear end of your M3! - Enthusiast Bundles - BMW

Transform the rear end of your M3! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4876607
Mfg#:
047898LAEBKT
Ships in 6 Business Days
ON SALE! SAVE 25%
$1004.99

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

$749.00 USD
This product is lifetime replacement eligible Lifetime Replacement

G80 G82 Rear Diffuser - Gloss Black

ES#4685415 - 048254la01KT - G80 G82 Rear Diffuser - Gloss Black - Upgrade the styling of your G80 with the Turner Diffuser that adds the perfect amount of aggressive, yet OEM+ characteristics! - Turner Motorsport - BMW

Upgrade the styling of your G80 with the Turner Diffuser that adds the perfect amount of aggressive, yet OEM+ characteristics! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4685415
Mfg#:
048254LA01KT
Ships in 6 Business Days
ON SALE! SAVE 30%
$525.99

This product was last offered at the strikethrough price on
05-02-2026

$367.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

F8X Turner Carbon Fiber Add-On Lower Diffuser Kit

ES#4020225 - 24623tms01KT - F8X Turner Carbon Fiber Add-On Lower Diffuser Kit - Changed your mind and want to add the lower to compliment your Turner Upper Diffuser? - Turner Motorsport - BMW

Changed your mind and want to add the lower to compliment your Turner Upper Diffuser? affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Only for use with ES3691433

Brand:
Turner Motorsport - Corporate Logo
ES#:
4020225
Mfg#:
24623TMS01KT
Ships on Jul 24, 2026
Auto Notify
ON SALE!
$1340.99

This product was last offered at the strikethrough price on
05-02-2026

$1300.76 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ADRO F8X M3 / M4 Carbon Rear Diffuser

ES#4773012 - A14A10-1301 - ADRO F8X M3 / M4 Carbon Rear Diffuser - Upgrade the Styling of Your F8x M3 or M4 with ADRO's Carbon Fiber Rear Diffuser! - ADRO INC. - BMW

Upgrade the Styling of Your F8x M3 or M4 with ADRO's Carbon Fiber Rear Diffuser! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ADRO INC. - Corporate Logo
ES#:
4773012
Mfg#:
A14A10-1301
In Stock
$1290.00 USD

R1 Designed Carbon Fiber Diffuser - F8x

ES#4723550 - F8XR1CFDIF - R1 Designed Carbon Fiber Diffuser - F8x - Add aggressive styling to your BMW with the class of carbon fiber - Suvneer - BMW

Add aggressive styling to your BMW with the class of carbon fiber affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Suvneer - Corporate Logo
ES#:
4723550
Mfg#:
F8XR1CFDIF
Ships in 5 Business Days
$599.99 USD
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Street Flow Rear Diffuser

ES#4714491 - 047616la01KT - E46 M3 Street Flow Rear Diffuser - Add-on diffuser to deliver a true motorsport look to your M3. Fastens seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E46. - ECS - BMW

Add-on diffuser to deliver a true motorsport look to your M3. Fastens seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E46. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4714491
Mfg#:
047616LA01KT
Ships in 6 Business Days
ON SALE! SAVE 22%
$509.99

This product was last offered at the strikethrough price on
05-02-2026

$399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dry Carbon Extended-Fin Competition Rear Diffuser - F80 M3 | F82/ F83 M4

ES#4899913 - BM-0352-V2 - Dry Carbon Extended-Fin Competition Rear Diffuser - F80 M3 | F82/ F83 M4 - Whether enhancing aerodynamics or upgrading the vehicles rear-end appearance, this diffuser delivers exceptional functionality and style. - AUTOTECKNIC - BMW

Whether enhancing aerodynamics or upgrading the vehicle’s rear-end appearance, this diffuser delivers exceptional functionality and style. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4899913
Mfg#:
BM-0352-V2
Ships in 7 Business Days
$595.00 USD
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 ABS Diffuser & ABS High Kick Rear Spoiler

ES#4751326 - 028979TMS01EBKT - E46 M3 ABS Diffuser & ABS High Kick Rear Spoiler - Gloss Black ABS Styling package includes both the rear diffuser as well as the complimentary high kick trunk spoiler. - Enthusiast Bundles - BMW

Gloss Black ABS Styling package includes both the rear diffuser as well as the complimentary high kick trunk spoiler. Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751326
Mfg#:
028979TMS01EBKT
In Stock
ON SALE! SAVE 40%
$579.87

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

$349.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Textured ABS Diffuser & LTW Front Lip - Matte Black - E36 M3

ES#4920256 - 28202tms01ebKT1 - Textured ABS Diffuser & LTW Front Lip - Matte Black - E36 M3 - Add aggressive styling to the front and rear of your E36! - Enthusiast Bundles - BMW

Add aggressive styling to the front and rear of your E36! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4920256
Mfg#:
28202TMS01EBKT1
In Stock
ON SALE! SAVE 23%
$638.99

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

$489.00 USD
This product is lifetime replacement eligible Lifetime Replacement

F80 M3 Carbon Diffuser & Carbon High Kick Trunk Spoiler

ES#4751386 - 023241TMS01EBKT - F80 M3 Carbon Diffuser & Carbon High Kick Trunk Spoiler - Gloss Carbon Styling package includes both the rear diffuser as well as the carbon trunk spoiler. A full vehicle facelift! - Enthusiast Bundles - BMW

Gloss Carbon Styling package includes both the rear diffuser as well as the carbon trunk spoiler. A full vehicle facelift! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751386
Mfg#:
023241TMS01EBKT
In Stock
ON SALE! SAVE 26%
$1278.21

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

$949.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dry Cabron Versus Rear Diffuser Kit - F8x M3/M4

ES#4714710 - ATK-BM-0342 - Dry Cabron Versus Rear Diffuser Kit - F8x M3/M4 - Hand-laid carbon fiber to upgrade your exterior styling - AUTOTECKNIC - BMW

Hand-laid carbon fiber to upgrade your exterior styling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4714710
Mfg#:
ATK-BM-0342
Ships in 7 Business Days
$945.00 USD
This product is lifetime replacement eligible Lifetime Replacement

E36 M3 Street Flow Rear Diffuser

ES#4736871 - 047602la01KT - E36 M3 Street Flow Rear Diffuser - Add-on diffuser to deliver a true motorsport look to your M3. Fastens seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E36. - ECS - BMW

Add-on diffuser to deliver a true motorsport look to your M3. Fastens seamlessly to the bottom of the rear bumper giving a platform to show off your exhaust and complete the rear end of the E36. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4736871
Mfg#:
047602LA01KT
In Stock
ON SALE! SAVE 34%
$453.19

This product was last offered at the strikethrough price on
05-02-2026

$299.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E36 Competition Diffuser Kit

ES#4057534 - E36-CDK - E36 Competition Diffuser Kit - Comes with End Plate Decals - MKAH Motorsports - BMW

Comes with End Plate Decals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits both M and Non-M bumpers!

Brand:
MKAH Motorsports - Corporate Logo
ES#:
4057534
Mfg#:
E36-CDK
Ships in 5 Business Days
$855.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Let us help you find the parts that fit your BMW

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings