BMW M3 Performance Exhaust - Dinan - Axleback - Free Flow - Polished - ’15–’20. A dyno-tuned 304 stainless axle-back that delivers a richer note under throttle while keeping cabin drone in check.

Built to precise specs for factory hangers, this system uses twin computer-controlled 76 mm valves—about 45% less restrictive than OE—to balance tone and flow. Stock actuators are reused, M-Drive control is retained, and polished 3.5 in tips complete the package.

Features

• Dyno-tuned free-flow design; reduced backpressure and drone
• 100% 304 stainless; uses factory brackets/hangers
• Twin 76 mm valves; reuse OE actuators; M-Drive adjustability
• Polished 3.5" laser-engraved quad tips
• About 3 lb lighter; gains up to +5 hp (per Dinan testing)
• Fitment: 2015–2020 BMW M3 (F80) and M4 (F82/F83)

Questions or ready to schedule? Call Austin, TX at 512-982-9393 and Los Angeles, CA area at 562-981-6800. We offer professional installation and customization at both locations.

If you’re considering multiple items, please contact us for shipping discounts.

We install on premises at both locations.

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