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

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$2,399.95
$2,399.95 $2,699.95
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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.

Installation Instructions
  • 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

This Part Fits:

Year Make Model Submodel
2015-2018 BMW M3 Base
2015-2020 BMW M4 Base
2019-2020 BMW M4 CS
2016 BMW M4 GTS
Dinan 15-20 BMW M3/M4 (F80/F82/F83) Free Flow Axleback Exhaust System - Black Tips

$2,399.95

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    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.