• BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner - Reinhart Autohaus
  • BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner - Reinhart Autohaus
  • BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner - Reinhart Autohaus
  • BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner - Reinhart Autohaus
  • BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner - Reinhart Autohaus
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Vorsteiner

BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner

BMW G82/G83 M4 Carbon Fiber Rear Diffuser by Vorsteiner

  • Shipped Worldwide
  • Fitted With Precision
  • Ready To Ship
£2,935.35 GBP
£2,935.35 GBP
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Aggressively redefine the rear profile of your BMW G8X M4 with the Carbon Fiber Rear Diffuser by Vorsteiner. Designed to enhance aerodynamic efficiency and visual impact, this sculpted diffuser features deep vertical fins that manage airflow and increase rear-end stability—especially at high speeds.

Constructed from aerospace-grade pre-preg carbon fiber and cured using autoclave technology, the diffuser offers lightweight strength, flawless fitment, and a premium high-gloss finish that complements the M4’s factory design.

Key Features:

  • Compatible with BMW G82 and G83 M4 models

  • Enhances rear airflow and improves aerodynamic performance

  • Aggressive multi-fin design adds race-inspired styling

  • Manufactured from autoclave-cured pre-preg carbon fiber

  • UV-resistant high-gloss finish ensures long-term durability and carbon clarity

  • Direct bolt-on fitment—OEM-compatible, no modifications required

  • Complements Vorsteiner’s full carbon aero package for a cohesive exterior upgrade

An essential rear-end upgrade for M4 owners who want to combine cutting-edge performance with Vorsteiner’s signature carbon fiber craftsmanship.

Vorsteiner

Vorsteiner is a company that was conceived through the imagination of creating the highest quality parts for the most discerning vehicles and clientele. Our relentless pursuit of advancement and perfection is seen not only in our unmatched automotive parts, but also in the hands of carbon fiber craftsmen to create purely sensational parts for the most deserving and elite vehicles.

Installation

We recommend seeking professional assistance when looking to install products. partnered with a number of dealers around the world to enable you to walk in and have items fitted locally.

FAQ

CAN I FINANCE MY ORDER

Yes. We offer a range of finance products. 

We offer the widely adopted Klarna and ClearPay for split weekly payments. 

We also offer longer term instalments via Klarna and NewPay.

Please speak to a member of our team using the live chat or via email at sales@reinhartautohaus.com if you have any further questions. 

WHAT IS YOUR RETURN POLICY?

Our policy lasts 14 days. If 14 days have gone by since your product arrives with you, unfortunately we can’t offer you a refund or exchange.

You can read our full returns policy here. 

DO YOU SHIP WORLDWIDE?

Yes. We ship worldwide. We have shipped to over 75 countries to date. 

WILL MY PRODUCTS INCLUDE A WARRANTY?

Yes. All products sold on the Reinhart Autohaus store may include any manufacturer warranties. For more information on warranties, check our terms. 

Please speak to a member of our team using the live chat or via email at sales@reinhartautohaus.com if you have any further questions. 

HOW LONG WILL IT TAKE TO ARRIVE?

Delivery times will vary depending on product, time of year, location and courier used.

Generally items in the UK will arrive within 1-3 days for express shipping and 2-5 days for standard or free shipping. 

For shipping outside of the UK, times will vary from 2-5 days for express shipping and 3-10 days for standard shipping.

Please speak to a member of our team using the live chat or via email at sales@reinhartautohaus.com if you have any further questions. 

WILL THESE PRODUCTS EFFECT MY VEHICLE WARRANTY

Some modifications can affect the manufacturer warranty provided with your vehicle. 

Whilst Reinhart Autohaus can advise, we cannot confirm if a product will or will not affect your vehicle warranty. It's always advised to check with your dealer and finance provider prior to purchasing and installing parts. 

Please speak to a member of our team using the live chat or via email at sales@reinhartautohaus.com if you have any further questions. 

WILL THIS FIT MY CAR

Please check the product page of the product in question, we include fitment information on every product. 

If this information is missing, please speak to a member of our team using the live chat or via email at sales@reinhartautohaus.com if you have any further questions.