BMW 540i Performance Exhaust — Dinan Freeflow Axle-Back with Black Ceramic Coated Tips (Black), 2017–2023. A precision-built upgrade that sharpens the 540i’s tone and retains factory-style fitment.

Crafted from 100% 16-gauge 304 stainless steel, this axle-back mounts to factory hangers and employs a Dinan muffler that reduces backpressure for gains of +6 hp and +5 lb-ft at 6600 rpm. A Helmholtz chamber moderates low-RPM drone, while twin quadrilateral, black ceramic-coated tips with laser-engraved Dinan logos deliver a commanding finish. The factory valve is removed for consistent flow and sound.

Features

• G30 540i fitment: 2017–2023
• 100% 304 stainless steel, 16-gauge
• Helmholtz chamber for reduced cabin resonance
• Twin black ceramic-coated quadrilateral tips, laser-engraved
• Not compatible with BMW M Performance rear diffuser

Questions or ready to book install? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer installation and customization at both locations and are happy to help plan your setup.

Purchasing multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov