Product Description
BMW Free Flow Axle Back Exhaust with Black Tips - Dinan D660-0054A-BLK
BMW Free Flow Axle Back Exhaust with Black Tips - Dinan D660-0054A-BLK
The F85 X5M and F86 X6M are the quintessential SUV in terms of power and performance with accolades in numerous periodicals crowning them the pinnacle of their class. With the possibility of putting down over 700 HP with a base tune, these vehicles are no slouch. Dinan engineers wanted to match this impressive feat with an equally impressive exhaust tone that let those around these SUV's hear the power that lies beneath the hood as well as be able to show it. The exhaust system was designed to improve exhaust flow by reducing back pressure, resulting in increased power output and a deep sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Dinan also incorporates a Helmholtz chamber design that reduces resonance or "drone" at low RPM. The technology within the can is matched in impressiveness by its outward appearance and design as the system is built to exacting specifications to ensure a simplistic bolt-on installation. It is made from 100% 16 gauge 304 stainless steel and will resist corrosion for years to come. The design features quad 89mm (3.5") black ceramic or polished exhaust tips for a tasteful high-performance look.
Features:
- 8 HP @ 6000 RPM, 7 LB-FT @ 6000 RPM
- Quad 89mm (3.5") polished or cermic black laser engraved exhaust tips
- Enjoyably louder, sportier sound with a deep growl
- Helmholtz chamber to reduce drone
- Computer controlled valve limits noise during low speed driving; valve opens fully during high-load conditions to allow free flow
- 100% 304 stainless steel construction
- Uses the factory brackets and hangers for a factory-like fitment
Vehicle Fitment:
BMW | F85 | X5 M | S63 4.4L |
BMW | F86 | X6 M | S63 4.4L |

Founded in 1979, Dinan is well established as North America’s premiere BMW tuner. Dinan develops, manufactures and markets a comprehensive line of high performance products and systems, distributed through a nationwide network of Authorized Dinan Performance Centers that includes select BMW Dealerships and Independent BMW Service/High Performance facilities. Recently, Dinan has further expanded its offerings to include other European marques such as Audi, Mercedes, and Porsche.
Warranty Information
We consider our limited warranty coverage to be a very important component of each Dinan Performance Product and we want you to fully understand it. Dinan’s objective is to enhance the enthusiast’s driving experience by designing and manufacturing the best performing and highest quality automotive products possible. Our limited warranty is intended to cover Dinan products when they are used in the manner for which they were originally designed. Like any manufacturer, we cannot be responsible when our products are subjected to misuse, improper installation, misapplication, modification or neglect. Consumers are encouraged to familiarize themselves with the specifics of Dinan’s Limited Warranty, including exclusions and potential effects to the manufacturer’s limited new car warranty, prior to making the decision to purchase and install Dinan products and systems. Consumers are invited to contact Dinan at 408-779-8584 with any questions regarding Dinan’s limited warranty coverage, procedures, exclusions, etc.