Dinan 20-24 BMW M340i/M440i G20/G22/G23/G26 Free Flow Axleback Exhaust System with Black Tips

The use of quad tips also presented some additional challenges and fostered some innovation to the already visually impressive system constructed entirely of TIG welded and brushed T304 stainless steel. Confined to dual tips, the factory system utilizes only one exhaust valve and functions by eliminating the passenger side tip when the valve is closed, siphoning all gases through the muffler and out the driver's side tip for quieter operation. With the introduction of more pipes/tips, this methodology was not practical, or desired. In true Dinan M exhaust fashion, our talented engineering team decided that integrating a second valve to the system would garner the most favorable results in both symmetry and overall sound. The result is a system that incorporates larger 76mm tubing (vs 70mm stock) and allows freer flow through the entirety of the system but specifically to both outer pipes when the enlarged valves are open. The resulting flow and sound mimics an awe-inspiring straight pipe solution with a deeper and meatier tone, a defining element of all Dinan exhausts. In contradiction to the aggressiveness resulting from open valves, when the valves are closed, all gasses are forced into the muffler for sound deadening and exit the two inner tips. Regardless of valve position, the intimate nature of the interior is retained so conversation can continue without an excessively loud drone courtesy of numerous drone abatement technologies in the can. With the Dinan exhaust equipped on the M340i/M440i you get the best of both worlds, aggressive tone/sound and civility. A combination that is a paramount to any M exhaust, and now by virtue of tip count, the M340i and M440i. Welcome to the illustrious family. Stainless Steel - Black Tips - G20 / G22 / G23 / G26

• Stock exhaust valve actuator reused and another valve/actuator added to the opposing side promoting even flow regardless of valve position
• Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions
• Twin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves
• Quad 4" diameter clamp-on, double-walled, ceramic black and laser engraved exhaust tips
• Easy bolt-on installation with included mounting hardware
• Larger diameter piping for increased flow (76mm vs 70mm)
• More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
• 100% 304 stainless steel construction
• 4 lbs lighter than the stock system
• Enjoyably louder, sportier sound

Enhance your BMW M340i or M440i with the Dinan 20-24 BMW M340i/M440i G20/G22/G23/G26 Free Flow Axleback Exhaust System. Crafted entirely from 304 stainless steel and featuring sleek black tips, this exhaust system offers a perfect blend of performance, style, and sound. The system incorporates larger 76mm tubing compared to the stock 70mm, promoting increased airflow and reducing restriction for improved power and torque. This upgrade results in an estimated gain of 6 horsepower and 5 lb-ft of torque at 6600 RPM, making your vehicle more responsive and exhilarating to drive.
The dual exhaust valves allow for customizable sound and performance. Computer-controlled, these valves limit noise during low-speed driving for civility and open fully under high-load conditions for an aggressive, straight-pipe sound. The innovative design adds a second valve to ensure even flow and symmetry, regardless of valve position. The quad 4-inch diameter clamp-on tips, double-walled and ceramic black with laser engraving, provide an aggressive aesthetic while maintaining durability and heat resistance. Installation is straightforward with included mounting hardware, offering a bolt-on upgrade that significantly enhances your vehicle's auditory presence and visual appeal.
Thanks to the combination of larger diameter piping and optimized valve control, this exhaust system delivers a deeper, more robust tone that commands attention without sacrificing interior comfort. The internal drone abatement technologies ensure a quiet cabin experience during daily driving, while the exterior sound remains sporty and assertive. Designed specifically for 2020-2024 BMW M340i and M440i models, this system is a perfect upgrade for enthusiasts seeking both performance gains and an enhanced driving experience. With a lightweight design, it reduces overall weight by 4 pounds compared to the stock exhaust, contributing to improved handling and efficiency. Elevate your BMW's performance and style with the Dinan free flow axleback exhaust system, a premium choice for discerning drivers who demand the best.
Trust in Dinan’s reputation for engineering excellence and quality craftsmanship to deliver a product that not only sounds impressive but also improves your vehicle’s overall performance and aesthetics.

Features:

• Constructed entirely from 304 stainless steel for durability and corrosion resistance

• Black quad 4-inch diameter double-walled, ceramic tips with laser engraving for an aggressive look

• Larger 76mm tubing compared to the stock 70mm for increased airflow and reduced restriction

• Dual exhaust valves with computer control for customizable sound and noise regulation

• Added second valve to promote even flow and symmetry regardless of valve position

• Increases power by approximately 6 HP and 5 lb-ft of torque at 6600 RPM

• Installation is straightforward with included hardware for a bolt-on upgrade

• Reduces weight by 4 pounds for improved handling and efficiency

• Designed specifically for 2020-2024 BMW M340i and M440i models

• Internal drone abatement technology ensures a quiet cabin during daily driving

Fitments:
2020 BMW M340i Base
2020 BMW M340i xDrive Base
2021 BMW M340i Base
2021 BMW M340i xDrive Base
2021 BMW M440i Base
2021 BMW M440i xDrive Base
2022 BMW M340i Base
2022 BMW M340i xDrive Base
2022 BMW M440i Base
2022 BMW M440i Gran Coupe Base
2022 BMW M440i xDrive Base
2022 BMW M440i xDrive Gran Coupe Base
2023 BMW M340i Base
2023 BMW M340i xDrive Base
2023 BMW M440i Base
2023 BMW M440i Gran Coupe Base
2023 BMW M440i xDrive Base
2023 BMW M440i xDrive Gran Coupe Base
2024 BMW M340i Base
2024 BMW M340i xDrive Base
2024 BMW M440i Base
2024 BMW M440i Gran Coupe Base
2024 BMW M440i xDrive Base
2024 BMW M440i xDrive Gran Coupe Base
2025 BMW M340i Base
2025 BMW M340i xDrive Base
2025 BMW M440i Base
2026 BMW M340i Base
2026 BMW M340i xDrive Base
2026 BMW M440i Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1