Dinan Free Flow Axle-Back Exhaust - 2015-2019 BMW X5M/X6M | D660-0054A

The Dinan Free Flow Axle-Back Exhaust (D660-0054A-BLK) is an engineered acoustic and flow solution for the 2015-2019 BMW X5M (F85) and X6M (F86), designed to match the vehicle's impressive power with an equally impressive exhaust tone. This system delivers a verified power increase of +8 HP and +7 LB-FT of torque at 6000 RPM.

The exhaust system is designed to improve exhaust flow by reducing back pressure, resulting in a deep sound that is pleasantly aggressive under hard acceleration. Dinan also incorporates a Helmholtz chamber design that specifically reduces resonance or "drone" at low RPM. A computer-controlled valve limits noise during low-speed driving and opens fully during high-load conditions for maximum flow and sound. The system is built from 100% 16 gauge 304 stainless steel and features quad 89mm (3.5") black ceramic exhaust tips for a tasteful, high-performance look.

Features:

• Verifiable Power Gains: Delivers an increase of +8 HP and +7 LB-FT of torque at 6000 RPM.

• Acoustic Duality: Features a Helmholtz chamber to reduce drone while utilizing a computer-controlled valve for sound adjustment (quiet at low speed, aggressive at high load).

• Superior Material & Construction: Built from 100% 16 gauge 304 stainless steel construction to resist corrosion for years to come.

• Aesthetic Excellence: Finishes with quad 89mm (3.5") black ceramic coated and laser engraved exhaust tips (polished tips also available) for a tasteful, high-performance look.

• Fitment Integrity: Uses the factory brackets and hangers for a guaranteed, factory-like installation.

Product Contains:

• (1) Dinan Axle-Back Muffler Assembly

• (4) Quad 89mm Black Ceramic Coated Exhaust Tips

• (1) Complete Installation Hardware Kit

Warranty This product is supported by a Manufacturer's Warranty. Note: Manufacturer warranty terms are subject to change.

Installation Instructions