Dinan Performance Exhaust System

Fits 2020–2024 BMW M340i

Part #: D660-0085

Overview

The Dinan Freeflow Axleback Exhaust System for the BMW M340i is a high-performance upgrade designed to enhance your vehicle’s sound, style, and airflow. Crafted entirely from TIG welded and brushed T304 stainless steel, this system combines durability with a sleek, polished finish. It is ideal for enthusiasts seeking a bold, aggressive exhaust note while maintaining refined craftsmanship and reliable performance. The system’s innovative design supports improved exhaust flow, contributing to a deeper tone and a more commanding presence on the road. This exhaust system is engineered for those who want to elevate their BMW M340i’s auditory experience without sacrificing daily comfort. Whether you’re looking for a more aggressive exhaust tone during spirited driving or a sophisticated appearance with polished quad tips, this system delivers both. Its construction ensures long-lasting performance and resistance to corrosion, making it a premium choice for discerning BMW owners.

Key Features

This performance exhaust system features several key elements that support its impressive functionality and aesthetic appeal:

• Constructed from TIG welded and brushed T304 stainless steel for durability and corrosion resistance
• Polished quad tips that enhance the vehicle’s visual appeal and provide a sporty, refined look
• Incorporates larger 76mm tubing for increased airflow compared to the stock 70mm pipes
• Designed with dual valves to optimize sound and flow, offering a customizable exhaust note
• Supports freer exhaust flow, resulting in a deeper, meatier tone that mimics straight pipe performance
• Engineered to maintain interior comfort with drone abatement technologies, ensuring a quiet cabin when desired
• Easy bolt-on installation compatible with 2020–2024 BMW M340i models

Construction & Design

The system’s construction emphasizes precision welding and high-quality materials, with TIG welding providing strong, clean joints. The brushed T304 stainless steel not only offers a premium aesthetic but also ensures longevity and resistance to the elements. The quad tips are meticulously crafted to complement the sporty design, adding a distinctive visual signature to your BMW.

Driving Feel & Feedback

This exhaust upgrade enhances the auditory character of your M340i, delivering a deeper, more aggressive tone when valves are open, while retaining civility and interior comfort when closed. The dual valve system allows for customizable sound levels, supporting a dynamic driving experience that balances performance and refinement.

Installation & Fitment

Designed as a direct bolt-on replacement, this system requires no modifications for installation on compatible BMW M340i models from 2020 to 2024. Proper fitment ensures a seamless upgrade that maximizes performance and aesthetic appeal.

What’s Included

The package includes the complete axleback exhaust system with quad polished tips, all necessary hardware, and detailed installation instructions to facilitate a straightforward upgrade process.

Ideal For

This system is perfect for BMW enthusiasts seeking to enhance their vehicle’s sound profile, improve exhaust flow, and add a touch of sophistication with polished quad tips. It’s suitable for those who want a balanced combination of aggressive tone and daily civility, elevating the overall driving experience.