BMW 540i Valved Catback Exhaust 2018-2024 | WSTN Performance (B58 G30/G38)

The G30 540i is a grand tourer with a performance engine. The exhaust should match. The B58-powered 540i is one of BMW's most complete driver's cars 340 horsepower from a smooth 3.0L single-turbo inline-six, wrapped in a full-size executive sedan. It's fast, refined, and completely let down by a factory exhaust that's been engineered for silence rather than character. The WSTN Performance Valved Catback for the G30/G38 540i corrects that. Mandrel-bent 304 stainless, TIG-welded throughout, with a remote-controlled valve muffler that opens the exhaust note under load and stays composed on the highway. Quality checked in Perth. Dispatched worldwide. Built to order for your exact chassis. Why Upgrade? ✅ Character Unlocked: The B58 produces a naturally great exhaust note the factory system buries it. The WSTN valved catback lets the engine speak properly. ✅ Valved Intelligence: Remote valve controller gives you full exhaust volume when you want it, civilised output when you don't. ✅ Free-Flowing Design: Mandrel-bent straight-through construction reduces backpressure for improved B58 turbo response. ✅ Direct Bolt-On: No modification required. Designed to mount directly to factory G30/G38 flanges. ✅ Built to Last: 304 stainless steel throughout corrosion resistant, built for years of ownership. Key Features & Specs Material: 304 Stainless Steel corrosion resistant, built to last Construction: Precision mandrel-bent, TIG-welded joints Muffler Type: Valved remote control included Fitment Style: Direct bolt-on to OEM flanges Finish: Polished 304 stainless tips Fitment & Compatibility ✔️ BMW 540i Sedan (G30) 2018–2024 (B58 3.0T) ✔️ BMW 540i Gran Turismo (G38) 2018–2024 (B58 3.0T) Direct OEM-spec replacement. No modification required. Fitment confirmed for G30/G38 platform with B58 engine. Technical Note Valve Control: Remote valve controller included. Open for full volume, closed for cruise. Sound Profile: Deep, refined B58 exhaust note performance sound without drone. What's In the Box 1 x WSTN Performance Valved Catback Exhaust System 1 x Remote Valve Control Kit Installation Difficulty: 3/5 Requires workshop lift and exhaust experience Time Estimate: 2–3 Hours Mounting Type: Direct bolt-on to factory exhaust flanges 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. Products marked as “Built to Order” are handmade in 3–5 weeks (check the product page as lead times may vary), personally dispatched from our Perth WA facility. 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 Sound Clip