BMW 340i Performance Exhaust - Dinan - Axle Back Freeflow with Helmholtz Chamber - Black - 16-18. A premium axle-back that delivers a richer tone and purposeful performance for your F30 340i.

Designed to cut back pressure and improve flow, this system sounds refined while cruising and assertive under throttle, with tasteful burbles. A Helmholtz chamber targets low-RPM resonance to curb cabin drone. Built from 100% 16-gauge 304 stainless steel, it installs on factory brackets and hangers for precise fit. Twin 89mm ("3.5") ceramic black tips complete the package. The factory exhaust valve is removed, with gains up to +6 HP and +5 lb-ft at 6600 RPM.

Features

• Helmholtz chamber reduces low-RPM drone
• 100% 16-gauge 304 stainless steel
• Twin 89mm ("3.5") ceramic black tips
• Uses factory brackets and hangers

Questions or ready to schedule? 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 services at both locations.

Buying 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