Customers rate us 4.9/5 based on 84 reviews.
1 4

Vorsteiner

BMW F80/F81 M3 | F82/F83 M4 GTS Carbon Fiber Rear Diffuser by Vorsteiner

BMW F80/F81 M3 | F82/F83 M4 GTS Carbon Fiber Rear Diffuser by Vorsteiner

  • Worldwide Shipping
  • 14 Day Returns
  • Price Match Guarantee
£2,173.05 GBP
£2,173.05 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

Please contact us for a quote on shipping if your area is not available for checkout.

View full details

Channel race-ready aerodynamics and bold rear-end styling with the GTS Carbon Fiber Rear Diffuser by Vorsteiner, designed for the BMW F80/F81 M3 and F82/F83 M4. Inspired by the factory M4 GTS, this aggressive diffuser features deep sculpted fins that enhance airflow, reduce drag, and add a commanding track-inspired look.

Expertly crafted from aerospace-grade pre-preg carbon fiber and autoclave-cured for optimal strength and precision fitment, the GTS diffuser seamlessly integrates with the factory rear bumper for a flawless OEM+ finish.

Key Features:

  • Fits BMW F80/F81 M3 and F82/F83 M4

  • GTS-inspired design enhances airflow and rear-end downforce

  • Aggressive multi-fin layout creates a motorsport-grade rear profile

  • Constructed from autoclave-cured pre-preg carbon fiber

  • UV-resistant high-gloss clear coat ensures long-lasting durability and carbon clarity

  • OEM-compatible direct bolt-on installation—no cutting or modifications required

  • Pairs perfectly with Vorsteiner front spoiler, side blades, and decklid spoiler for a cohesive aero package

A must-have upgrade for F8X M owners looking to bring true GTS styling and aerodynamic function to their high-performance build—with the craftsmanship only Vorsteiner delivers.

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 include a minimum 6 month warranty in addition to any manufacturer warranties (which may supersede this period). 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. 

Disclaimer, Warranty, Shipping and Returns

DISCLAIMER

Reinhart Autohaus Ltd. products and those from our partners, sold via our website, are for racing and competition only, not for road or off-road use. Use is restricted to events with official motorsport organisation approval. Compliance with UK, US, or other nations' laws is the buyer's responsibility. Reinhart Autohaus Ltd. makes no warranty regarding the legality of road use.

WARRANTY
We stand by every product in the Reinhart Store store. Therefore, all products are delivered with a warranty. The TRE range of parts are covered by industry-leading two-year warranty. Our warranty terms are the same across every product and cover any manufacturing defects that could occur over time, outside of usual wear and tear.

SHIPPING
We offer worldwide shipping on every product we stock on the Reinhart store.

RETURNS

We have a 14-day return policy, you have 14 days after receiving your item to request a return and then 14 days from the point of us accepting the return to return the goods to us. However, some items are non-returnable please visit our policies page here.

Should you need assistance with shipping, fitting or a return, please contact a member of the team by sales@reinhartautohaus.com