Dinan 21-27 BMW M3/M4 (G80/G82/G83) Valved Axleback Exhaust System - Black Tips

Through extensive development and testing nearly every possible permutation of the exhaust was attempted. Unlike the previous generation where cabin sound/drone was largely unchanged between the sedan and the coupe, that was not the case with the G8x chassis'. This caused countless iterations to be attempted in the quest for a common system that not only sounded superb externally but one that also didn't introduce an overbearing internal cabin drone on either body type. The result is a system we are confident will be coveted by all for years to come. To achieve desired sound volume and tone worthy of the G8x M3/M4 the tubing was enlarged to 76mm (vs 70mm stock) to allow freer flow, and reduce backpressure, throughout the entirety of the system. The larger piping gives way to multiple pathways as it nears the rear of the vehicle -- the choice of which is utilized determined by the factory exhaust valves which are retained. When valves are closed, flow is directed into the Dinan muffler, where absorption and reactive technologies are used, and exit out the two inner tips. This limits noise during low-speed driving and produces a more subdued, albeit deeper, and agreeable note. However, when the valves are open during high-load conditions the bulk of the gases bypass the muffler altogether for a near straight pipe design and maximum aural enjoyment to be achieved. It's the perfect marriage for all tastes and allows civility or impassioned aggression depending on what the situation demands. The combination is one Dinan has deemed fitting for the marques signature performance models that cater to the tasteful enthusiast who demand the best for all situations. Stainless Steel - Black Tips - G80/G82/G83

• Stock exhaust valve actuators reused, and operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-drive settings
• Computer controlled exhaust valves are retained and limit noise during low-speed driving and open fully during high-load conditions
• Four, diffuser filling, 4.5-inch (114mm) double-walled, black ceramic coated clamp-on tips with laser engraved Dinan logo
• 6-pounds lighter than the stock axle back (Stock: 44-pounds vs. Dinan: 38-pounds)
• Drone abatement technologies used to reduce cabin resonance
• Larger diameter piping for increased flow (76mm vs. 70mm)
• Factory-like fitment with included mounting hardware
• Maximum gains of +6 HP and +5 lb-ft of torque
• 100% 304 Stainless Steel construction
• Enjoyably louder, sportier sound

The Dinan 21-27 BMW M3 and M4 G80, G82, G83 Valved Axleback Exhaust System offers a perfect blend of performance, sound, and sophistication for the discerning enthusiast. Designed after extensive development and rigorous testing, this exhaust system features larger 76mm tubing, which enhances airflow and reduces backpressure, resulting in increased power and torque. The system maintains the factory exhaust valve operation, allowing the driver to customize the exhaust tone via the M-drive settings, enabling seamless transition between a subdued, refined sound during low-speed driving and an aggressive roar under high-load conditions. This intelligent control ensures a balanced driving experience tailored to your mood or driving environment. Crafted from 100% stainless steel with a sleek black ceramic coating, the exhaust system combines durability with a sporty aesthetic. The four 4.5-inch double-walled tips, laser engraved with the Dinan logo, add a premium finishing touch to the vehicle's rear end. The system is designed for easy installation with factory-like fitment and includes all necessary mounting hardware. Not only does this exhaust reduce weight by approximately 6 pounds compared to the stock system, but it also delivers maximum gains of up to 6 horsepower and 5 lb-ft of torque, enhancing your M3 or M4’s performance. The incorporation of drone abatement technologies ensures cabin resonance is minimized, delivering an enjoyable yet unobtrusive experience during daily driving. Whether you seek a louder, sportier exhaust note or a more subdued tone for street use, this system provides the flexibility to match your preferences without sacrificing performance or quality. Perfectly engineered for the latest BMW M models, the Dinan Valved Axleback Exhaust System elevates your vehicle’s sound and power while maintaining the refined quality expected from the Dinan brand. Experience a significant upgrade in both style and performance with this premium exhaust solution, designed to meet the demands of passionate BMW enthusiasts.

Features:

• Enlarged 76mm piping for increased airflow and reduced backpressure

• Factory re-used exhaust valves for adjustable sound via M-drive settings

• Computer-controlled valves limit noise during low-speed driving and fully open under high-load conditions

• Black ceramic-coated, 4.5-inch double-walled tips with laser engraving for a premium look

• Lightweight design, approximately 6 pounds lighter than stock

• Built from 100% stainless steel for durability and corrosion resistance

• Incorporates drone abatement technologies to minimize cabin resonance

• Factory-like fitment with included mounting hardware for easy installation

• Maximum performance gains of +6 HP and +5 lb-ft torque

• Designed to fit 2021-2023 BMW M3 and M4 models with valved exhaust system

Fitment:
BMW M3 Base 2021
BMW M3 Base 2022
BMW M3 Base 2023
BMW M3 Base 2024
BMW M3 Base 2025
BMW M3 Base 2026
BMW M3 Competition 2021
BMW M3 Competition 2022
BMW M3 Competition 2023
BMW M3 Competition 2024
BMW M3 Competition 2025
BMW M3 Competition 2026
BMW M3 Competition xDrive 2022
BMW M3 Competition xDrive 2023
BMW M3 Competition xDrive 2024
BMW M3 Competition xDrive 2025
BMW M3 Competition xDrive 2026
BMW M4 Base 2021
BMW M4 Base 2022
BMW M4 Base 2023
BMW M4 Base 2024
BMW M4 Base 2025
BMW M4 Base 2026
BMW M4 Competition 2021
BMW M4 Competition 2022
BMW M4 Competition 2023
BMW M4 Competition 2024
BMW M4 Competition 2025
BMW M4 Competition 2026
BMW M4 Competition xDrive 2022
BMW M4 Competition xDrive 2023
BMW M4 Competition xDrive 2024
BMW M4 Competition xDrive 2025
BMW M4 Competition xDrive 2026
BMW M4 CSL 2023