Dinan Free Flow Axle-Back Exhaust System with Polished Tips for BMW X5M / X6M 2020-2025

The Dinan Free Flow Exhaust System for the F9x BMW X5M and X6M is designed to elevate both performance and sound for these already formidable SUVs. Known for their agility and power despite their size, the X5M and X6M are top-tier luxury performance SUVs. However, their stock exhaust, while respectable, tends to hold back the true auditory potential of the twin-turbo V8. Dinan's exhaust system aims to unleash a more aggressive, yet refined sound while improving performance, all without sacrificing comfort or luxury.

Key Features:

• Performance Gains: The system provides maximum gains of +6 HP and +5 ft-lb of torque, thanks to increased exhaust flow and reduced backpressure.
• Larger Piping for Better Flow: Dinan increased the exhaust piping diameter to 83mm (from 80mm stock), allowing for freer flow throughout the system, contributing to both performance and sound improvements.
• Sportier, Louder Sound: The exhaust delivers a more engaging and aggressive exhaust note without excessive volume or drone, making it suitable for daily driving as well as spirited performance. The system retains the factory computer-controlled exhaust valves, which remain closed for a more refined sound at low speeds but open fully under hard acceleration for a deeper, more aggressive tone.
• Reduced Drone: Drone abatement technologies ensure that the system doesn't overwhelm the cabin with noise during low RPM driving, allowing for a quieter, more intimate interior experience.
• Quad 4.5" Exhaust Tips: The system features massive quad 4.5" (114mm) double-walled, polished stainless steel tips, laser-engraved with the Dinan logo. These diffuser-filling tips enhance the visual aggression of the X5M/X6M while accentuating the factory cutouts, giving the SUV an unmistakable presence even before the engine is heard.
• Stainless Steel Construction: Made from T304 stainless steel and TIG welded, the system is designed for durability and high performance. The entire system is brush finished for a pristine appearance straight out of the box.
• Stock Valve Functionality Retained: The factory exhaust valve actuators are reused, and their operation remains unchanged. This means the exhaust tone can still be adjusted via the M-drive settings, allowing the driver to switch between more subdued and aggressive sounds depending on the driving mode.
• Less Restrictive Valves: The twin secondary exhaust valves are 76mm in diameter, making them 30% less restrictive than the stock valves, which aids in better exhaust flow and sound projection during high-load conditions.
• Factory-like Fitment: The system is designed for easy installation with included mounting hardware, ensuring a snug fit while maintaining factory-like integration.