




WSTN Performance
WSTN BMW M3 And M4 Rear Carbon Fibre Diffuser (F80/F82/F83)
Free Australian Delivery Over AU$99
Free International Delivery Over AU$200
Only The Highest Quality Products
Have a question about this product? Contact Us
In stock. Ships in 2-4 Days
Choose options
Free Australian Delivery Over AU$99
Free International Delivery Over AU$200
Only The Highest Quality Products
Have a question about this product? Contact Us
In stock. Ships in 2-4 Days
Free Australian Delivery Over AU$99
Free International Delivery Over AU$200
Only The Highest Quality Products
Have a question about this product? Contact Us
In stock. Ships in 2-4 Days
The WSTN BMW M3 and M4 Rear Carbon Fiber Diffuser is the perfect addition to enhance the aggressive look of your vehicle. Designed to fit the BMW F80, F82, and F83 models, this diffuser is made of high-quality carbon fibre, ensuring durability and longevity. The sleek and aerodynamic design improves the performance of your car by increasing downforce and reducing drag.
The diffuser is easy to install and will upgrade the appearance of your BMW M3 or M4 with its striking, sporty look. Get ready to turn heads with this premium aftermarket accessory.
PRODUCT SPECIFICATION
- Pure genuine carbon fibre
- High gloss finish
- Performance-style design
- Fitted to the OEM rear bumper
- No hardware needed (just clip in the new one)
- Very lightweight
If you have any questions feel free to email us and we'll gladly assist.
IN THE BOX
- Rear carbon fibre diffuser
COMPATIBILITY
- BMW F80 M3 Saloon/Sedan
- BMW F80 M3 Competition Saloon/Sedan
- BMW F82 M4 Coupe
- BMW F82 M4 Competition Coupe
- BMW F83 M4 Convertible
- BMW F83 M4 Competition Convertible
FAQ
Yes, We Deliver Worldwide with DHL, FeDex, UPS and More
Detailed fitment data is included in the "Fitment" or "Compatibility" section of every product page.
If you need to confirm a specific fitment before we start your build, please message our team through live chat or at contact@wstnperformance.com or our live chat
To ensure you can shop with total confidence, the majority of our performance parts, including our premium exhausts and carbon fibre range are backed by at least a 12-month warranty.
We specify the exact coverage on every product page so you’re always informed. For the finer details, feel free to explore our full [Warranty Policy].
If you’d like to confirm coverage for a specific build, our experts are ready to help via Chat or at contact@wstnperformance.com
We want to get your parts to you as quickly as possible.
To ensure total transparency, specific delivery estimates are clearly displayed on each product page and at checkout.
- In-Stock Items: Typically arrive in 1–3 business days (Express) or 3–7 days (Standard) within Australia.
- Made-to-Order: To ensure the highest quality, some of our specialised components are handcrafted to order and generally ship within 1–2 weeks.
- International: We ship worldwide via Express (2–5 days) and Standard (3–10 days).
Need a precise lead time? If you’re planning a build and need to confirm availability, our team is available via Live Chat or at contact@wstnperformance.com. or contact us
Most of our products are often treated as standard hardware upgrades.
However, since manufacturer warranties vary by brand and location, we are unable to provide a universal confirmation on coverage.
To be 100% safe, we recommend checking with your dealership prior to purchase.
Our return policy lasts for 14 days. If more than 14 days have passed since your product was delivered, we regret to inform you that we can't provide a refund or exchange.
Yes, we certainly can. Beyond our listed range, we have an extensive global network that allows us to source a vast array of OEM, Aftermarket, and Genuine parts from around the world. Whether you are looking for a rare factory component or a specific performance upgrade, we are here to help.
To help us assist you as quickly as possible, please make sure to include your vehicle details (Make, Model, Year, and Series/VIN) along with the part you are chasing.
Currently, WSTN Performance operates as a specialised parts supplier, however, we are actively expanding our service offerings.
We are currently working on establishing a network of certified partner workshops to provide professional installation, with future plans for our own dedicated facility.
Are you a workshop owner?
We are always looking to partner with high-quality workshops interested in installing or stocking our range. If you would like to join our authorised network, please reach out to us via Live Chat or email at
contact@wstnperformance.com to discuss a partnership.

