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Dinan Axleback Exhaust BMW F80 M3 / F82 M4

SKU: DNND660-0050
Price
$1,292.95

Select Tips:

Polished
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested.

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product Description

Unleash the true sound of your BMW M3 or M4 with the Dinan Free Flow Axle-Back Exhaust System. Designed specifically for the S55-powered F80 M3 and F82/F83 M4, this premium exhaust system delivers a deeper, more aggressive exhaust note while improving exhaust flow and reducing weight compared to the factory rear section.

BMW's factory exhaust does an excellent job of balancing comfort and performance, but it leaves much of the S55's character hidden. Dinan engineered this system to provide a richer, more refined exhaust tone with increased volume and improved presence throughout the RPM range, all without introducing excessive drone during everyday driving.

Constructed from high-quality T304 stainless steel and featuring Dinan's signature polished or black ceramic-coated exhaust tips, this axle-back system not only sounds incredible but also enhances the rear appearance of your M car. Whether paired with a stock midpipe or an upgraded X-pipe system, the Dinan Free Flow Exhaust delivers the sound and performance enthusiasts expect from a premium BMW exhaust upgrade.

Fitment Notes

  • Fits BMW F80 M3 (2015-2018)
  • Fits BMW F82 M4 Coupe (2015-2020)
  • Fits BMW F83 M4 Convertible (2015-2020)
  • Designed for vehicles equipped with the BMW S55 twin-turbocharged engine
  • Direct bolt-on replacement for the factory rear exhaust section
  • Retains factory electronically controlled exhaust valves
  • Compatible with factory and aftermarket midpipes
  • No ECU tuning required
  • Professional installation recommended

Included

  • Dinan Free Flow axle-back exhaust system
  • Electronically controlled valve integration
  • Quad polished or black ceramic-coated exhaust tips
  • Mounting hardware
  • Installation instructions

Product Specs

  • Part Number: D660-0050 / D660-0050-BLK
  • Material: T304 stainless steel construction
  • Exhaust Type: Axle-back exhaust system
  • Tip Finish: Polished or Black Ceramic-Coated Stainless Steel
  • Tip Configuration: Quad exhaust tips
  • Valve Operation: Retains factory electronic exhaust valves
  • Installation: Direct bolt-on
  • Application: Street and track use

Product Features

  • Produces a deeper, more aggressive exhaust note than stock
  • Retains factory valve functionality for adjustable sound levels
  • Reduces exhaust restriction compared to the OEM rear muffler
  • Premium T304 stainless steel construction for long-term durability
  • Black ceramic-coated exhaust tips enhance rear-end appearance
  • Designed to minimize unwanted cabin drone during cruising
  • Direct bolt-on installation with OEM-like fitment
  • Compatible with factory and aftermarket exhaust components

For enthusiasts seeking a more engaging exhaust note without sacrificing refinement, the Dinan Free Flow Axle-Back Exhaust System is the perfect solution. Delivering improved sound, premium construction, and factory-style functionality, it's one of the most popular exhaust upgrades available for the F80 M3 and F82/F83 M4 platform.

View Product Install Guide