Dinan 15-20 BMW M3/M4 F80/F82/F83 Free Flow Axleback Exhaust System with Black Tips

Dinan's Free Flow axle-back exhaust system features 100% stainless steel construction measured to exact specifications to ensure proper fit via factory hangers and mounting points. Dyno tuned for maximum exhaust flow with minimum backpressure, this system is designed to provide a more aggressive sound under acceleration, while reducing drone inside the vehicle, thanks to computer-controlled valves that limit noise during low-speed driving and open fully during high-load conditions to allow free flow. The exhaust gasses exit through larger laser engraved polished, or ceramic black, quad tips. Stainless Steel - Polished Tips - F80/F82/F83

• Computer controlled valve limits noise during low speed driving; valve opens fully during high-load conditions to allow free flow
• Twin secondary exhaust valves with a whopping 76mm diameter, making them 45% less restrictive than the OE valves.
• Operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-Drive settings.
• Quad 3.5" black ceramic coated, or polished stainless, laser engraved exhaust tips
• Uses the factory brackets and hangers for a factory-like fitment
• Drone abatement technologies used to reduce cabin resonance
• Dinan exhaust is 3 lbs lighter than stock
• Stock exhaust valve actuaters are reused
• 100% 304 stainless steel construction
• Enjoyably louder, sporter sound
• More Power: +5 HP

Upgrade your BMW M3 or M4 with the Dinan 15-20 BMW M3/M4 F80/F82/F83 Free Flow Axleback Exhaust System, designed for optimal performance and an aggressive sound. Crafted from 100% 304 stainless steel, this exhaust system ensures durability and corrosion resistance, while the precision-measured fitment guarantees seamless installation using factory brackets and hangers. The system features larger twin secondary exhaust valves with a 76mm diameter, making them approximately 45% less restrictive than the stock valves, which significantly enhances exhaust flow and horsepower. The computer-controlled valves allow for dynamic noise regulation, limiting sound during low-speed cruising and opening fully under high-load conditions for maximum performance and a sportier exhaust tone. This intelligent valve operation maintains comfort by reducing drone inside the cabin, thanks to advanced resonance abatement technologies. The quad 3.5-inch laser-engraved tips are available in polished stainless or ceramic black finishes, providing a sleek aesthetic that complements the vehicle's sporty look. Benefits include an increase of +5 horsepower, a weight reduction of about 3 pounds compared to stock exhaust, and the ability to tailor the exhaust sound via M-Drive settings. This system reuses the factory exhaust valve actuators, ensuring reliable operation and seamless integration with your vehicle’s existing systems. Designed specifically for 2015-2019 BMW M3 and M4 models, this exhaust upgrade delivers a more satisfying, sportier exhaust note while maintaining quiet comfort during everyday driving.

Features:

• Constructed from 100% 304 stainless steel for durability and corrosion resistance

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

• Twin secondary exhaust valves with a 76mm diameter, reducing restriction by 45% compared to stock

• Quad 3.5-inch laser-engraved tips available in polished stainless or ceramic black finishes

• Factory-fitment using original brackets and hangers for easy installation

• Resonance abatement technology to reduce cabin drone and resonance

• Lightweight design, approximately 3 pounds lighter than stock exhaust system

• Reuses factory exhaust valve actuators for reliable operation

• Enhanced exhaust flow providing +5 HP increase

• Compatible with 2015-2019 BMW M3 and M4 models for a perfect fit

Fitments:
2015 BMW M3 Base
2015 BMW M4 Base
2016 BMW M3 Base
2016 BMW M4 Base
2016 BMW M4 GTS
2017 BMW M3 Base
2017 BMW M4 Base
2018 BMW M3 Base
2018 BMW M4 Base
2019 BMW M4 Base
2019 BMW M4 CS
2020 BMW M4 Base
2020 BMW M4 CS

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