WSTN Performance
WSTN BMW M3/M4 Valved Catback Exhaust System (G80/G82/G83)
► 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
Hand built to order. Ships in 1-2 Weeks
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
Hand built to order. Ships in 1-2 Weeks
► 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
Hand built to order. Ships in 1-2 Weeks
DESCRIPTION
Want your M3 or M4 to sound as good as it looks?
The WSTN Valved Exhaust System transforms your S58-powered M car—sharper throttle response, lighter weight, and instant control over your exhaust tone with the push of a button. Built from true stainless steel, this system delivers raw performance and refinement in one package made to handle everything from daily drives to full-throttle runs.
Why Upgrade?
✅ Switch between muffled and straight piped, refined and aggressive tone using the electronic valve control system (remote included)
✅ Made in the same factory as the other Big Brands
✅ Gain throttle response and deeper tone with 3.5” mandrel-bent piping and reduced backpressure
✅ Drop 11 kg from the factory system for improved handling and sound
✅ Dual-walled black chrome tips for a motorsport-inspired finish
✅ Constructed from stainless steel—resists corrosion, heat, and cracking
✅ Direct bolt-on fit—no cutting or welding required
✅ 1-Year No BS Warranty
Fitment & Compatibility
✔️ BMW G80 M3 Sedan (2020 +)
✔️ BMW G82 M4 Coupe (2020 +)
✔️ BMW G83 M4 Convertible (2020 +)
✔️ Designed for S58 twin-turbo engines
In the Box
-
1 × WSTN Performance Valved Exhaust System
-
1 × Remote Control Unit (for valve operation)
- 1 × Full Fitting Kit (Gaskets, Clamps, Bolts)
Installation
🛠️ Fitment: Direct OEM-style bolt-on—mounts cleanly to factory points
⏱️ Install Time: ~2 hours (professional installation recommended)
📦 Includes: Everything required for DIY setup
Why WSTN Performance?
✅ True Stainless Steel - Never mild steel or coated alternatives
✅ Engineered Fitment - Each system is model-specific and CNC-formed for precision
✅ Performance You Can Feel - Lighter, stronger, and tuned for balanced volume
Bring Your M Car to Life
Refined when you need it. Brutal when you want it.
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.
