Rear Diffusers

Enhance the rear-end aerodynamics and styling of your vehicle with AUTOID’s rear diffusers, engineered for a perfect blend of performance and visual impact. From subtle OEM+ designs to aggressive carbon fibre options, each diffuser is crafted to complement your car’s lines while improving airflow management.

Built with high-quality materials and precision fitment, our rear diffusers deliver durability, long-term finish quality, and seamless integration with existing bumpers and exhaust setups. Ideal for enthusiasts refining both daily drivability and track-inspired aesthetics, these diffusers provide a clean, purposeful upgrade.

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187 products

4.8
Rated 4.8 out of 5 stars
4.8 Stars (19 Reviews)
VW Golf GTI Mk7.5 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2017 - 2020) - AUTOID - Rear Diffusers - Zaero DesignVW Golf GTI Mk7.5 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2017 - 2020) - AUTOID - Rear Diffusers - Zaero Design
4.9
Rated 4.9 out of 5 stars
4.9 Stars (8 Reviews)
In Stock
BMW 1 Series & M135i F20 Pre - LCI EVO - 1 Gloss Black Rear Diffuser by ZAERO (2011 - 2015, F20 F21) - AUTOID - Rear Diffusers - Zaero DesignBMW 1 Series & M135i F20 Pre - LCI EVO - 1 Gloss Black Rear Diffuser by ZAERO (2011 - 2015, F20 F21) - AUTOID - Rear Diffusers - Zaero Design
4.9
Rated 4.9 out of 5 stars
4.9 Stars (10 Reviews)
In Stock
BMW 2 Series M235i & M240i F22 F23 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2014 - 2019) - AUTOID - Rear Diffusers - Zaero DesignBMW 2 Series M235i & M240i F22 F23 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2014 - 2019) - AUTOID - Rear Diffusers - Zaero Design
5.0
Rated 5.0 out of 5 stars
5.0 Stars (10 Reviews)
In Stock
Whilst Stocks Last
Carbon Fibre Performance Rear Diffuser for BMW M2 & M2 Competition (2015 - 2021, F87) - AUTOID - Rear Diffusers - EssentialsBMW M2 & M2 Competition F87 Carbon Fibre Rear Diffuser by FORM (2015-2021)
4.4
Rated 4.4 out of 5 stars
4.4 Stars (13 Reviews)
In Stock
BMW 1 Series M Sport F20 F21 LCI Single Exit (118i 120i 120d 125i) EVO - 1 Gloss Black Rear Diffuser by ZAERO (2015 - 2019) - AUTOID - Rear Diffusers - Zaero DesignBMW 1 Series M Sport F20 F21 LCI Single Exit (118i 120i 120d 125i) EVO - 1 Gloss Black Rear Diffuser by ZAERO (2015 - 2019) - AUTOID - Rear Diffusers - Zaero Design
4.3
Rated 4.3 out of 5 stars
4.3 Stars (14 Reviews)
In Stock
4.4
Rated 4.4 out of 5 stars
4.4 Stars (7 Reviews)
4.9
Rated 4.9 out of 5 stars
4.9 Stars (8 Reviews)
BMW 1 Series, M135i & M140i F20 F21 LCI EVO - 1 Gloss Black Diffuser Side Spat Flap Extensions by ZAERO (2015 - 2019) - AUTOID - Rear Diffusers - Zaero DesignBMW 1 Series, M135i & M140i F20 F21 LCI EVO - 1 Gloss Black Diffuser Side Spat Flap Extensions by ZAERO (2015 - 2019) - AUTOID - Rear Diffusers - Zaero Design
4.2
Rated 4.2 out of 5 stars
4.2 Stars (5 Reviews)
In Stock
VW Golf GTI Mk8 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2020+) - AUTOID - Rear Diffusers - Zaero DesignVW Golf GTI Mk8 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2020+) - AUTOID - Rear Diffusers - Zaero Design
5.0
Rated 5.0 out of 5 stars
5.0 Stars (3 Reviews)
In Stock
Whilst Stocks Last
BMW M2 G87 Pre - Preg Carbon Fibre Performance Rear Diffuser by TRE (2023+) - AUTOID - Rear Diffusers - TREBMW M2 G87 Pre - Preg Carbon Fibre Performance Rear Diffuser by TRE (2023+) - AUTOID - Rear Diffusers - TRE
5.0
Rated 5.0 out of 5 stars
5.0 Stars (3 Reviews)
In Stock
Carbon Fibre Performance Rear Diffuser for BMW M3 & M4 (2014 - 2019 F80 F82 F83) - AUTOID - Rear Diffusers - EssentialsCarbon Fibre Performance Rear Diffuser for BMW M3 & M4 (2014 - 2019 F80 F82 F83) - AUTOID - Rear Diffusers - Essentials
4.3
Rated 4.3 out of 5 stars
4.3 Stars (9 Reviews)
BMW G80 G81 M3 & G82 G83 M4 Pre - Preg Carbon Fibre OEM Style Rear Diffuser by TRE (2021+) - AUTOID - Rear Diffusers - TREBMW G80 G81 M3 & G82 G83 M4 Pre - Preg Carbon Fibre OEM Style Rear Diffuser by TRE (2021+) - AUTOID - Rear Diffusers - TRE
VW Golf R Mk7.5 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2017 - 2020) - AUTOID - Rear Diffusers - Zaero DesignVW Golf R Mk7.5 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2017 - 2020) - AUTOID - Rear Diffusers - Zaero Design
5.0
Rated 5.0 out of 5 stars
5.0 Stars (2 Reviews)
In Stock
Carbon Fibre Performance Rear Diffuser for BMW M235i & M240i (2014 - 2020, F22 F23) - AUTOID - Rear Diffusers - EssentialsCarbon Fibre Performance Rear Diffuser for BMW M235i & M240i (2014 - 2020, F22 F23) - AUTOID - Rear Diffusers - Essentials
4.8
Rated 4.8 out of 5 stars
4.8 Stars (4 Reviews)
In Stock
Exclusive
BMW M240i G42 ID - 01 Carbon Fibre Rear Diffuser by TRE (2021+) - AUTOID - Rear Diffusers - TREBMW M240i G42 ID - 01 Carbon Fibre Rear Diffuser by TRE (2021+) - AUTOID - Rear Diffusers - TRE
4.0
Rated 4.0 out of 5 stars
4.0 Stars (4 Reviews)
In Stock
Carbon Fibre Performance Rear Diffuser for BMW M140i/M135i LCI (2015 - 2019) - AUTOID - Rear Diffusers - EssentialsCarbon Fibre Performance Rear Diffuser for BMW M140i/M135i LCI (2015 - 2019) - AUTOID - Rear Diffusers - Essentials
4.7
Rated 4.7 out of 5 stars
4.7 Stars (11 Reviews)
In Stock
New Arrival
BMW M2 G87 EVO - S Gloss Black Rear Diffuser by ZAERO (2023+) - AUTOID - Rear Diffusers - Zaero DesignBMW M2 G87 EVO - S Gloss Black Rear Diffuser by ZAERO (2023+) - AUTOID - Rear Diffusers - Zaero Design
5.0
Rated 5.0 out of 5 stars
5.0 Stars (4 Reviews)
In Stock
Customer Favourite
BMW M2 G87 Pre - Preg Carbon Fibre TR87 Rear Diffuser by TRE (2023+) - AUTOID - Rear Diffusers - TRETRE BMW M2 G87 Pre-Preg Carbon Fibre TR87 Rear Diffuser by TRE (2023+)  Rear Diffusers  AUTOID®
5.0
Rated 5.0 out of 5 stars
5.0 Stars (3 Reviews)
In Stock
BMW M2 & M2 Competition Pre - preg Carbon Fibre Rear Diffuser by TRE (2015 - 2021) - AUTOID - Rear Diffusers - TREBMW M2 & M2 Competition Pre - preg Carbon Fibre Rear Diffuser by TRE (2015 - 2021) - AUTOID - Rear Diffusers - TRE
5.0
Rated 5.0 out of 5 stars
5.0 Stars (1 Review)
In Stock
New Arrival
VW Golf GTI Clubsport Mk8 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2020+) - AUTOID - Rear Diffusers - Zaero DesignVW Golf GTI Clubsport Mk8 EVO - 1 Gloss Black Rear Diffuser by ZAERO (2020+) - AUTOID - Rear Diffusers - Zaero Design
4.4
Rated 4.4 out of 5 stars
4.4 Stars (5 Reviews)
In Stock
Whilst Stocks Last
BMW 2 Series 220i & M240i G42 Pre - preg Carbon Fibre Rear Diffuser by TRE (2021+) - AUTOID - Rear Diffusers - TREBMW 2 Series 220i & M240i G42 Pre - preg Carbon Fibre Rear Diffuser by TRE (2021+) - AUTOID - Rear Diffusers - TRE
5.0
Rated 5.0 out of 5 stars
5.0 Stars (2 Reviews)
In Stock
5.0
Rated 5.0 out of 5 stars
5.0 Stars (3 Reviews)
Whilst Stocks Last
BMW 1 Series M Sport F40 Single Exit (116i 116d 118i 118d) EVO - 1 Gloss Black Rear Diffuser by ZAERO (2019+) - AUTOID - Rear Diffusers - Zaero DesignBMW 1 Series M Sport F40 Single Exit (116i 116d 118i 118d) EVO - 1 Gloss Black Rear Diffuser by ZAERO (2019+) - AUTOID - Rear Diffusers - Zaero Design

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Enhance the rear-end aerodynamics and styling of your vehicle with AUTOID’s rear diffusers, engineered for a perfect blend of performance and visual impact. From subtle OEM+ designs to aggressive carbon fibre options, each diffuser is crafted to complement your car’s lines while improving airflow management.

Built with high-quality materials and precision fitment, our rear diffusers deliver durability, long-term finish quality, and seamless integration with existing bumpers and exhaust setups. Ideal for enthusiasts refining both daily drivability and track-inspired aesthetics, these diffusers provide a clean, purposeful upgrade.

AUTOID rear diffusers pair perfectly with rear boot lids, spoilers, and exhaust tips, offering a cohesive rear-end styling solution for performance-focused builds.