BMW 340i Performance Exhaust - Dinan - Axle Back - Polished - '16-18. A Dinan-engineered free-flow axle-back for the F30 340i that adds a richer, sportier soundtrack without compromising daily comfort.

Made from 100% 16-gauge 304 stainless steel, it reduces back pressure for gains of up to +6 hp and +5 lb-ft at 6600 rpm. A tuned Helmholtz chamber cuts low-RPM drone for civility on the highway, yet the note turns pleasantly aggressive under throttle. It mounts to factory hangers and removes the OE computer-controlled exhaust valve. Twin 89mm polished tips complete the package.

Features

• Axle-back, free-flow design
• 100% 16-gauge 304 stainless steel
• Helmholtz chamber reduces drone
• Twin 89mm polished tips
• Gains: +6 hp/+5 lb-ft @ 6600 rpm

Questions or ready to book? Call us for expert guidance, installation, and customization at our Austin, Texas or Los Angeles, California area shops: 512-982-9393 (TX) or 562-981-6800 (CA).

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