Rear Diffusers

Rear Diffusers - Carbon Fibre & Gloss Black Upgrades for All Performance Platforms

The rear diffuser is one of the most visually and aerodynamically significant upgrades available for any performance car. Positioned at the lowest point of the rear bumper, a well-designed diffuser manages the airflow beneath the car, reduces rear lift at speed and transforms the rear end aesthetic from factory-conservative to purposefully aggressive. At AUTOID, we supply a carefully curated range of rear diffusers for BMW, Volkswagen, Audi, Toyota and other performance platforms – in carbon fibre, gloss black ABS and polyurethane, across a price range that suits every build level.

Rear Diffusers

Skip to results list

Filters

203 items

Filter

  • BMW M3 G80 G81 & M4 G82 G83 Dry Carbon Fibre Rear Diffuser by Adro (2021+) - AUTOID® - Rear Diffusers - Adro

    BMW M3 G80 G81 & M4 G82 G83 Dry Carbon Fibre Rear Diffuser by Adro (2021+)

    BMW M3 G80 G81 & M4 G82 G83 Dry Carbon Fibre Rear Diffuser by Adro (2021+)
    12,364.06 NIS
  • BMW M5 F90 Pre-preg Carbon Fibre Rear Diffuser Pro by FORM (2017-2023) - AUTOID® - Rear Diffusers - FORM Industries

    BMW M5 F90 Pre-preg Carbon Fibre Rear Diffuser Pro by FORM (2017-2023)

    BMW M5 F90 Pre-preg Carbon Fibre Rear Diffuser Pro by FORM (2017-2023)
    1,586.60 NIS
  • BMW 3 Series M340i G20 Pre-LCI Carbon Fibre Rear Diffuser by Adro (2018-2022) - AUTOID® - Rear Diffusers - Adro

    BMW 3 Series M340i G20 Pre-LCI Carbon Fibre Rear Diffuser by Adro (2018-2022)

    BMW 3 Series M340i G20 Pre-LCI Carbon Fibre Rear Diffuser by Adro (2018-2022)

    (1)

    4,413.46 NIS
    In stock
  • Audi RS6 C8 & RS7 Carbon Fibre Rear Diffuser by Urban (2019+) - AUTOID® - Rear Diffusers - Urban Automotive

    Audi RS6 C8 & RS7 Carbon Fibre Rear Diffuser by Urban (2019+)

    Audi RS6 C8 & RS7 Carbon Fibre Rear Diffuser by Urban (2019+)
    11,448.87 NIS
  • BMW M135i F20 Pre - LCI EVO - 1 Gloss Black Rear Diffuser Splitters by ZAERO (2011 - 2015, F20 F21) - AUTOID - Rear Diffusers - Zaero Design

    BMW M135i F20 Pre-LCI EVO-1 Gloss Black Rear Diffuser Splitters by ZAERO (2011-2015)

    BMW M135i F20 Pre-LCI EVO-1 Gloss Black Rear Diffuser Splitters by ZAERO (2011-2015)
    314.50 NIS
    In stock
  • BMW 3 Series M340i G20 LCI Carbon Fibre Rear Winglets by Adro (2022+) - AUTOID® - Rear Diffusers - Adro

    BMW 3 Series M340i G20 LCI Carbon Fibre Rear Winglets by Adro (2022+)

    BMW 3 Series M340i G20 LCI Carbon Fibre Rear Winglets by Adro (2022+)

    (1)

    2,116.64 NIS
    In stock
  • BMW M3 F80 & M4 F82 F83 Pre-Preg Carbon Fibre Rear Diffuser by Adro (2014-2020) - AUTOID® - Rear Diffusers - Adro

    BMW M3 F80 & M4 F82 F83 Pre-Preg Carbon Fibre Rear Diffuser by Adro (2014-2020)

    BMW M3 F80 & M4 F82 F83 Pre-Preg Carbon Fibre Rear Diffuser by Adro (2014-2020)
    4,766.84 NIS
  • BMW M2 & M2 Competition F87 Carbon Fibre Rear Diffuser by Adro (2018-2021) - AUTOID® - Rear Diffusers - Adro
    Sale

    BMW M2 & M2 Competition F87 Carbon Fibre Rear Diffuser by Adro (2018-2021)

    BMW M2 & M2 Competition F87 Carbon Fibre Rear Diffuser by Adro (2018-2021)
    4,608.17 NIS 5,120.19 NIS
    In stock
  • BMW M3 E92 Carbon Fibre Rear Diffuser by Adro - AUTOID® - Rear Diffusers - Adro
    Sale

    BMW M3 E92 Carbon Fibre Rear Diffuser by Adro

    BMW M3 E92 Carbon Fibre Rear Diffuser by Adro
    5,085.21 NIS 5,650.23 NIS
    In stock
  • BMW 4 Series G22 G23 Carbon Fibre Competition Rear Diffuser Set by FORM (2020+) - AUTOID® - Rear Diffusers - FORM Industries

    BMW 4 Series G22 G23 Carbon Fibre Competition Rear Diffuser Set by FORM (2020+)

    BMW 4 Series G22 G23 Carbon Fibre Competition Rear Diffuser Set by FORM (2020+)
    2,597.20 NIS
  • Audi RS3 8Y Pre-Preg Carbon Fibre Rear Diffuser by AP (2020-2024) - AUTOID® - Rear Diffusers - Automotive Passion

    Audi RS3 8Y Pre-Preg Carbon Fibre Rear Diffuser by AP (2020-2024)

    Audi RS3 8Y Pre-Preg Carbon Fibre Rear Diffuser by AP (2020-2024)

    (1)

    3,795.09 NIS
  • BMW M340i, 330i & 320i G20 G21 LCI EVO-1 Gloss Black Rear Diffuser by ZAERO (2022+) - AUTOID® - Rear Diffusers - Zaero Design

    BMW M340i, 330i & 320i G20 G21 LCI EVO-1 Gloss Black Rear Diffuser by ZAERO (2022+)

    BMW M340i, 330i & 320i G20 G21 LCI EVO-1 Gloss Black Rear Diffuser by ZAERO (2022+)
    879.87 NIS
    In stock
  • BMW M2 G87 Pre-Preg Carbon Fibre Rear Diffuser by Adro (2023+) - AUTOID® - Rear Diffusers - Adro

    BMW M2 G87 Pre-Preg Carbon Fibre Rear Diffuser by Adro (2023+)

    BMW M2 G87 Pre-Preg Carbon Fibre Rear Diffuser by Adro (2023+)
    8,657.34 NIS
  • BMW M2 G87 Carbon Fibre Rear Diffuser by Alpha-N (2023+) - AUTOID® - Rear Diffusers - Alpha-N

    BMW M2 G87 Carbon Fibre Rear Diffuser by Alpha-N (2023+)

    BMW M2 G87 Carbon Fibre Rear Diffuser by Alpha-N (2023+)
    5,296.89 NIS
  • M Performance Rear Diffuser for BMW M235i & M240i (2014-2020, F22 F23) - AUTOID® - Rear Diffusers - BMW M Performance

    M Performance Rear Diffuser for BMW M235i & M240i (2014-2020, F22 F23)

    M Performance Rear Diffuser for BMW M235i & M240i (2014-2020, F22 F23)
    1,586.60 NIS
  • BMW XM G09 Gloss Black Competition Rear Diffuser by FORM (2022+) - AUTOID® - Rear Diffusers - FORM Industries

    BMW XM G09 Gloss Black Competition Rear Diffuser by FORM (2022+)

    BMW XM G09 Gloss Black Competition Rear Diffuser by FORM (2022+)
    844.55 NIS
    In stock
  • Audi RS3 Saloon 8Y Pre-Preg Carbon Fibre ID-01 Rear Diffuser by FORM (2020-2024) - AUTOID® - Rear Diffusers - FORM Industries

    Audi RS3 Saloon 8Y Pre-Preg Carbon Fibre ID-01 Rear Diffuser by FORM (2020-2024)

    Audi RS3 Saloon 8Y Pre-Preg Carbon Fibre ID-01 Rear Diffuser by FORM (2020-2024)
    3,530.07 NIS
    In stock
  • BMW 1 Series Dual Exit & M135i F40 Pre-Preg Carbon Fibre Rear Diffuser (2019-2024) - AUTOID® - Rear Diffusers - CT Design

    BMW 1 Series Dual Exit & M135i F40 Pre-Preg Carbon Fibre Rear Diffuser (2019-2024)

    BMW 1 Series Dual Exit & M135i F40 Pre-Preg Carbon Fibre Rear Diffuser (2019-2024)

    (1)

    2,469.99 NIS
  • BMW 220i, 230i & M240i Genuine M Performance Carbon Fibre Rear Diffuser (2021+, G42) - AUTOID® - Rear Diffusers - BMW M Performance

    BMW 220i, 230i & M240i Genuine M Performance Carbon Fibre Rear Diffuser (2021+, G42)

    BMW 220i, 230i & M240i Genuine M Performance Carbon Fibre Rear Diffuser (2021+, G42)
    4,943.50 NIS
  • Carbon Fibre Rear Diffuser for Audi RS3 Saloon by FORM (2017-2020, 8V LCI) - AUTOID® - Rear Diffusers - FORM Industries

    Carbon Fibre Rear Diffuser for Audi RS3 Saloon by FORM (2017-2020, 8V LCI)

    Carbon Fibre Rear Diffuser for Audi RS3 Saloon by FORM (2017-2020, 8V LCI)
    2,116.64 NIS

Frequently asked questions
Do rear diffusers actually improve aerodynamics or are they purely cosmetic?

A well-designed, vehicle-specific rear diffuser can produce measurable aerodynamic benefits by managing airflow under the car and reducing rear lift at higher speeds. Diffusers that have been CFD-tested (such as the ADRO X3M LCI diffuser in our range) produce quantified improvements in rear stability. Purely cosmetic diffusers with no proper underbody channel geometry deliver less aerodynamic benefit but still provide significant visual enhancement.
What material options are available for rear diffusers?

We offer rear diffusers in pre-preg carbon fibre (the highest specification - used on ADRO products), standard CFRP 2x2 weave carbon and high-quality ABS plastic in gloss black. Pre-preg is the lightest and most visually refined option; ABS gloss black provides an accessible, durable alternative at a lower price point.
Will a rear diffuser fit around my aftermarket exhaust?

This depends on the specific diffuser and exhaust tip size/position. Most vehicle-specific diffusers are designed around the OEM exhaust exit point. If you have an aftermarket exhaust with a different tip size, please contact us to confirm clearance before ordering.
How are rear diffusers installed?

Most diffusers in our range bolt directly onto existing mounting points on the rear bumper. No drilling, cutting or permanent modification is required. Installation typically takes 20–45 minutes with basic tools.

Rear Diffusers - Carbon Fibre & Gloss Black Upgrades for All Performance Platforms

The rear diffuser is one of the most visually and aerodynamically significant upgrades available for any performance car. Positioned at the lowest point of the rear bumper, a well-designed diffuser manages the airflow beneath the car, reduces rear lift at speed and transforms the rear end aesthetic from factory-conservative to purposefully aggressive. At AUTOID, we supply a carefully curated range of rear diffusers for BMW, Volkswagen, Audi, Toyota and other performance platforms – in carbon fibre, gloss black ABS and polyurethane, across a price range that suits every build level.

Key Benefits of a Rear Diffuser Upgrade:

  • Improved rear-end aerodynamics - reduces rear lift at higher speeds
  • Dramatic visual transformation of the rear bumper area
  • Carbon fibre options are lightweight, premium and UV-resistant
  • Direct OEM-mount fitment - no modification required
  • Compatible with standard exhaust systems and aftermarket exhaust tips