WSTN Performance
WSTN BMW S58 M2 3.5" High-Flow Single Midpipe (G87)
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
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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
Description
Fix the S58 Sound. Unleash the Growl.
The factory exhaust on the new G87 M2 is notorious for its "raspy," high-pitched tone due to the dual-pipe midsection and heavy resonators. The WSTN Performance 3.5" High-Flow Single Midpipe is the definitive solution. By merging the two exhaust banks into a single, massive 3.5-inch runner, we eliminate the resonance that makes the S58 sound like a "weed-wacker," replacing it with a deep, exotic, and smooth straight-six roar.
Why Upgrade?
✅ Acoustic Transformation: Converts the high-pitched rasp into a deep, refined "M" tone.
✅ Performance Gains: Dyno-tested flow improvements lead to faster turbo spool and sharper throttle response.
✅ Weight Reduction: Shaves approximately 8-10kg off the centre of the car compared to the bulky OEM resonated assembly.
✅ Zero-Drone Engineering: Designed to provide maximum volume under load while remaining civilised during highway cruising.
Key Features & Specs
Material: Authentic 3K T304 Stainless Steel (High-Corrosion Resistance).
Construction: Precision Mandrel-Bending with TIG-welded joints for maximum structural integrity.
Finish: Brushed 304 Industrial Stainless for durability and longevity.
Design: M2-specific high-clearance single-merge design to avoid underbody scraping on lowered vehicles.
Fitment & Compatibility
Chassis Support: G87 M2 Platform
✔️ BMW M2 (G87) — 2023+ (Including Manual & Steptronic)
Technical Note
M2 Specific Fitment: This version is specifically measured for the G87 M2’s shorter wheelbase to ensure perfect rear-muffler alignment.
Cutting Required: Like all single-midpipe upgrades, this requires cutting the factory exhaust at the BMW "dimple marks" before the valve actuators to secure the rear clamps.
Whats In the Box
1 x WSTN 3.5" Single Midpipe Section (G87 Specific)
1 x High-Clearance Replacement Chassis Brace (Eliminates rattle/vibration)
1 x Hardware Fitting Kit (Clamps)
Installation
Difficulty: 3/5 - Moderate (Requires pipe cutting tool)
Time Estimate: 60 - 90 Minutes
Mounting Type: Bolt-on to Downpipes / Clamp-on to Rear Section
Warranty / Shipping
DISCLAIMER
WSTN Performance components are designed for track and competition use. To protect your build and ensure a perfect finish, we recommend professional installation by a certified specialist/workshop. It is the buyer's responsibility to ensure modifications comply with local regulations.
WARRANTY
We stand behind every product we curate. All parts feature a minimum one-year manufacturer’s warranty as standard. This covers any manufacturing defects, giving you total peace of mind that your upgrade is built to last. View our full Warranty policy page here.
SHIPPING
We offer tracked worldwide shipping on our entire catalogue. To provide the best value and the latest production batches, some items ship directly from our global manufacturing hubs. In-stock orders process in 2–4 days, while "Built-to-Order" items are hand-crafted for you in 1–2 weeks then shipped. View our full Shipping policy page here.
RETURNS
We offer a flexible 14-day return policy for all brand-new, uninstalled items. If we ever make a mistake, we’ll cover the return shipping to make it right. View our full Return policy page here.
SUPPORT
Need a hand with fitment, shipping, or a return? Our Perth-based team is here to help you get your build perfect. 📧 Email: contact@wstnperformance.com
SOUND CLIP
https://modeautoconcepts.com/cdn/shop/videos/c/vp/eade88b87d634e6b8b0ff2295a275a3a/eade88b87d634e6b8b0ff2295a275a3a.HD-720p-1.6Mbps-22004731.mp4?v=0
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.
