Dinan 18-23 BMW M550i xDrive (G30) High Flow Middle Exhaust - 3in - Stainless Steel

This full mid-section kit removes the hydro-formed factory center section, including the resonator, and replaces it with larger 3" T304 stainless steel tubing for freer flowing capabilities. In place of the factory resonator, Dinan incorporates a beautifully crafted X-pipe made from mandrel-bent tubing for minimum restriction, unlike stamped X-pipes which are commonplace in the market. This sophisticated 'X' is not only the focal point of the system in terms of aesthetics but also the star when it comes to the effects on the sound. Promoting even flow to both banks of tips, the 'X' removes unwanted nuances in sound caused by uneven exhaust flow that is found in stock systems. Along with the inherent benefit of increased volume by removal of the resonator, the Dinan Middle Exhaust for the G30 M550i produces a louder, smoother and fuller exhaust note. Stainless Steel - 3" - G30 Only confirmed to fit with the Dinan Free Flow Axle Back and stock exhaust systems. Fitment with other axle back units is not guaranteed.

• Includes X-pipe crossover made from mandrel bent tubing for minimum restriction
• Deletes resonator between catalyst and rear muffler for increased volume
• 3" (76mm) tubing replaces stock 70mm tubing for free flow
• 100% 304 stainless steel construction
• Mounting hardware included
• Smoother, sportier sound
• Bolt-on installation

Upgrade the exhaust flow and sound of your 2018-2023 BMW M550i xDrive with the Dinan D660-0080 High-Flow Middle Exhaust. Designed for the G30 platform, this full mid-section kit removes the hydro-formed factory center section and resonator, replacing them with larger 3-inch T304 stainless steel tubing for improved airflow and a more responsive exhaust system. The result is a louder, smoother, and fuller exhaust note with a sportier character.
The factory resonator is replaced by a precision-crafted X-pipe made from mandrel-bent tubing. Unlike stamped X-pipes, this design promotes more even exhaust flow between both banks, helping reduce uneven sound characteristics while minimizing restriction. The X-pipe also serves as the visual and functional focal point of the system, complementing the increased volume created by resonator removal.
Built for durability and straightforward installation, the Dinan D660-0080 uses 100% 304 stainless steel construction and includes the required mounting hardware. This bolt-on middle exhaust is confirmed to fit with the Dinan Free Flow Axle Back and the stock exhaust system. Fitment with other axle-back systems is not guaranteed. Professional installation is recommended to ensure proper alignment and secure installation. This product is not approved for use on vehicles requiring California emissions compliance and may carry a Proposition 65 warning.

Features:

• Mandrel-bent X-pipe crossover promotes smooth, low-restriction exhaust flow

• Resonator delete increases exhaust volume and enhances the exhaust note

• 3-inch tubing replaces the factory 2.75-inch tubing for improved flow

• Constructed from durable 304 stainless steel

• Designed specifically for 2018-2023 BMW M550i xDrive G30 models

• Compatible with the Dinan Free Flow Axle Back and stock exhaust systems

• Includes mounting hardware

• Bolt-on installation

• Produces a smoother, sportier, and fuller exhaust sound

Fitment:
BMW M550i xDrive Base 2018
BMW M550i xDrive Base 2019
BMW M550i xDrive Base 2020
BMW M550i xDrive Base 2021
BMW M550i xDrive Base 2022
BMW M550i xDrive Base 2023