BMW M4 Performance Exhaust - Dinan - Axleback Freeflow - Black - 15-20. A premium axle-back system that delivers a deeper tone, improved flow, and factory-like fit for your F82/F83 M4.

Built from 100% 304 stainless steel and dyno-tuned, this freeflow design reduces backpressure while computer-controlled twin valves curb drone at cruise and open under load. Stock valve actuators are reused, so tone control via M-Drive remains. Installation uses factory hangers and the system is about 3 lbs lighter than stock. Quad 3.5" black ceramic-coated, laser-engraved tips complete the look, with measured construction for precise alignment and clearances. Gains up to +5 hp have been recorded.

Features

• 2015–2020 BMW M4 (F82/F83) fitment
• 100% 304 stainless steel construction
• Twin 76 mm valves; factory actuators retained
• Drone abatement to reduce cabin resonance
• Quad 3.5" black ceramic-coated tips
• Uses OE brackets and mounting points

Questions or planning an install? Call us—we offer professional installation and customization at our Austin, Texas and Los Angeles, California area facilities: 512-982-9393 (TX), 562-981-6800 (CA).

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

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