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 Rear Bumper Diffusers

Sort By
Filter By
Return to Top

E36 E36 Full Race Rear Diffuser

ES#3678001 - MKAH-E36-FRD-SL - E36 E36 Full Race Rear Diffuser - Minimize drag, maximize downforce, and give your vehicle a very aggressive look - MKAH Motorsports - BMW

Minimize drag, maximize downforce, and give your vehicle a very aggressive look affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
MKAH Motorsports - Corporate Logo
ES#:
3678001
Mfg#:
MKAH-E36-FRD-SL
Ships in 8 Business Days
$699.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Vacuumed Carbon Fiber Diffuser

ES#3424282 - BM-0352 - Vacuumed Carbon Fiber Diffuser - Add carbon fiber track styling to your M's rear end - AUTOTECKNIC - BMW

Add carbon fiber track styling to your M's rear end affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
3424282
Mfg#:
BM-0352
Ships in 7 Business Days
$679.99 USD

Rear bumper Diffuser

ES#1884856 - 51128047364 - Rear bumper Diffuser - Replace damaged or missing trim with replacements straight from BMW - Genuine BMW - BMW

Replace damaged or missing trim with replacements straight from BMW affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with M-sport rear bumper

Brand:
Genuine BMW - Corporate Logo
ES#:
1884856
Mfg#:
51128047364
Ships in 2 Business Days
12% off MSRP

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

$256.99

This product was last offered at the strikethrough price on
06-03-2026

$225.99 USD
This product is lifetime replacement eligible Lifetime Replacement

MP Style Carbon Fiber Rear Diffuser

ES#3437636 - 024936ECS014 - MP Style Carbon Fiber Rear Diffuser - A carbon diffuser will set your F87 apart from the rest - ECS - BMW

A carbon diffuser will set your F87 apart from the rest affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3437636
Mfg#:
024936ECS014
Special Order: No Guaranteed ETA
ON SALE! SAVE 25%
$853.99

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

$640.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MP Designed Rear Diffuser - F32/F33 435i/440i M-Sport

ES#4723238 - F32PDIFF435 - MP Designed Rear Diffuser - F32/F33 435i/440i M-Sport - The perfect diffuser option for your 4-series! - Suvneer - BMW

The perfect diffuser option for your 4-series! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles With M-Sport Package Only

Brand:
Suvneer - Corporate Logo
ES#:
4723238
Mfg#:
F32PDIFF435
Ships in 5 Business Days
$150.00 USD
This product is lifetime replacement eligible Lifetime Replacement

M Performance Carbon Fiber Diffuser - F22

Suvneer Motorsports M Sport rear bumper diffuser affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Suvneer - Corporate Logo
ES#:
4415773
Mfg#:
00434ECS01
Ships in 5 Business Days
$596.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Adro Rear Bumper Winglets - Toyota GR Supra

ES#4818134 - A18A20-1301 - Adro Rear Bumper Winglets - Toyota GR Supra - Enhance your GR Supra's aesthetics with the ADRO carbon fiber rear winglets - ADRO INC. - BMW

Enhance your GR Supra's aesthetics with the ADRO carbon fiber rear winglets affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ADRO INC. - Corporate Logo
ES#:
4818134
Mfg#:
A18A20-1301
Ships in 3 Business Days
$590.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Diffusor - High Gloss Black

ES#4563761 - 51125A404A1 - Rear Diffusor - High Gloss Black - Manages airflow to reduce drag and improve stability. - Genuine BMW - BMW

Manages airflow to reduce drag and improve stability. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
4563761
Mfg#:
51125A404A1
Ships in 1 day
5% off MSRP

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

$617.00

This product was last offered at the strikethrough price on
06-03-2026

$587.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Vacuumed Carbon Fiber Diffuser - F30 335i M-Sport

ES#4715774 - ATK-BM-0400 - Vacuumed Carbon Fiber Diffuser - F30 335i M-Sport - The perfect carbon diffuser for your f30! - AUTOTECKNIC - BMW

The perfect carbon diffuser for your f30! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles with M-Sport Package Only

Brand:
AUTOTECKNIC - Corporate Logo
ES#:
4715774
Mfg#:
ATK-BM-0400
Ships in 7 Business Days
$580.00 USD
This product is lifetime replacement eligible Lifetime Replacement

G87 M2 Gloss Black High Kick Spoiler & Rear Diffuser

ES#4876694 - 050581LAEBKT - G87 M2 Gloss Black High Kick Spoiler & Rear Diffuser - Transform the entire rear end of your G87 M2! - Enthusiast Bundles - BMW

Transform the entire rear end of your G87 M2! 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#:
4876694
Mfg#:
050581LAEBKT
In Stock
ON SALE! SAVE 33%
$846.99

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

$569.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

E92 M3 Carbon Fiber Rear Diffuser

ES#4305738 - E9XM33DCFDIF - E92 M3 Carbon Fiber Rear Diffuser - Add aggressive styling to your BMW with the class of carbon fiber - ECS - BMW

Add aggressive styling to your BMW with the class of carbon fiber affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4305738
Mfg#:
E9XM33DCFDIF
Back Ordered
Auto Notify
$566.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M performance Rear Diffusor - Matte Black

ES#2713996 - 51192343355 - M performance Rear Diffusor - Matte Black - Add some aggressive styling to your new ride for a unique look - Genuine BMW M Performance - BMW

Add some aggressive styling to your new ride for a unique look affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW M Performance - Corporate Logo
ES#:
2713996
Mfg#:
51192343355
In Stock
5% off MSRP

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

$591.00

This product was last offered at the strikethrough price on
06-03-2026

$562.99 USD
This product is lifetime replacement eligible Lifetime Replacement

M performance rear diffusor

ES#2719969 - 51192339218 - M performance rear diffusor - Add an aggressive style to the rear end of your 435 - Genuine BMW M Performance - BMW

Add an aggressive style to the rear end of your 435 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with M-Sport bumper and/or M Aerodynamics Package

Brand:
Genuine BMW M Performance - Corporate Logo
ES#:
2719969
Mfg#:
51192339218
Ships in 1 day
5% off MSRP

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

$591.00

This product was last offered at the strikethrough price on
06-03-2026

$562.99 USD
This product is lifetime replacement eligible Lifetime Replacement

BMW Performance Rear Diffuser

ES#2607475 - 51192291418 - BMW Performance Rear Diffuser - Elegant dynamics that blend seamlessly with the design of the rear bumper - Genuine BMW M Performance - BMW

Elegant dynamics that blend seamlessly with the design of the rear bumper affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW M Performance - Corporate Logo
ES#:
2607475
Mfg#:
51192291418
Ships in 5 Business Days
5% off MSRP

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

$591.00

This product was last offered at the strikethrough price on
06-03-2026

$562.99 USD
This product is lifetime replacement eligible Lifetime Replacement

BMW M Performance Rear Diffusor - F10

ES#2611679 - 51192291363 - BMW M Performance Rear Diffusor - F10 - Genuine BMW M Performance Rear Diffusor for your F10 535 or 550 - Matte Black - Genuine BMW - BMW

Genuine BMW M Performance Rear Diffusor for your F10 535 or 550 - Matte Black affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2611679
Mfg#:
51192291363
Ships in 1 day
4% off MSRP

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

$576.00

This product was last offered at the strikethrough price on
06-03-2026

$553.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Other BMW Rear Bumper Diffusers

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