Dinan 15-20 BMW M3/M4 (F80/F82/F83) Free Flow Axleback Exhaust System - 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

Enhance your BMW M3 or M4 with the Dinan 15-20 BMW M3/M4 F80/F82/F83 Free Flow Axle-Back Exhaust System, crafted from 100% stainless steel for durability and optimal performance. Designed with factory-fit precision using factory brackets and hangers, this system ensures a seamless installation experience. The exhaust features larger twin secondary valves with a 76mm diameter, which are 45% less restrictive than stock valves, promoting maximum exhaust flow and increased horsepower. Dyno-tuned to deliver an aggressive yet refined sound, it amplifies the engine's tone during acceleration while minimizing drone inside the cabin through advanced computer-controlled valves that limit noise at low speeds and open fully during high-load conditions.

Features:

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

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

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

• Quad 3.5-inch laser-engraved tips available in polished stainless or black ceramic coating for a sleek appearance

• Factory brackets and hangers used for a precise, factory-like fitment

• Advanced drone abatement technology reduces cabin resonance for a quieter interior experience

• Lighter weight at approximately 3 pounds less than stock exhaust for improved vehicle responsiveness

• Reuse of stock exhaust valve actuators maintains original operation and ease of control

• Boosts engine performance by adding approximately 5 horsepower

• Compatible with 2015-2020 BMW M3 and M4 models, including F80, F82, and F83 variants

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