BMW M3/M4 101mm Resonated Midpipe 2021+ (S58 G8X) | WSTN Performance

The S58 twin-turbo I6 deserves more than a factory midpipe choking the mid-range. WSTN Performance 101mm resonated midpipe for BMW M3/M4 G80/G82/G83 2021+. Why Upgrade? ✓ 101mm Oversized Diameter: A larger-than-standard 101mm bore clears more exhaust volume than a factory-diameter midpipe, reducing backpressure through the mid-section. ✓ Resonated for Balance: An internal resonator tames drone at cruise while still letting the S58 open up under load, striking a cleaner note than a straight-through pipe. ✓ Stainless Steel Durability: stainless steel construction handles sustained high-load driving and resists corrosion over the factory mid-pipe. Key Features & Specs Material: T304 stainless steel Construction: TIG-welded Pipe Diameter: 101mm oversized Sound Character: Resonated Branding: WSTN Performance logo Fitment & Compatibility ✓ BMW M3 (G80) / 2021+ / S58 3.0T ✓ BMW M4 (G82) / 2021+ / S58 3.0T ✓ BMW M4 (G83) / 2021+ / S58 3.0T Check it fits your car Use the fitment selector on this page to confirm your exact make, model, and year before ordering. What's In the Box ✓ 1 x WSTN Performance 101mm Resonated Midpipe with WSTN Performance logo Installation Difficulty: 2 of 5: bolt-on flange connections, no cutting required Time: 1 to 2 Hours Mounting: Bolts directly between the factory downpipes and rear section using OEM-style flanges and hangers 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 sell. All WSTN Performance products carry a 1 year WSTN Performance 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. Lead times are shown on the product page and every order is personally dispatched once complete. View our full Shipping policy page here. RETURNS We offer returns on all products if items are damaged or there is something wrong. 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