# Dinan 12-16 BMW M5 Freeflow Axleback Exhaust System -Black

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 Dinan's exclusive Helmholtz Chamber and Butterfly Valve technologies. The exhaust gasses exit through larger laser engraved ultra durable polished, or ceramic black, quad tips.

-   Quad 3.5" black ceramic coated, or polished stainless, laser engraved exhaust tips
-   Helmholtz chamber and butterfly valve technology incorporated to remove drone
-   Uses the factory brackets and hangers for a factory-like fitment
-   Enjoyably louder, throatier and deep sound
-   100% 304 stainless steel construction
-   "Straight through" canister design
-   More Power: +8 HP

This Part Fits:

Year

Make

Model

Submodel

2013-2016

BMW

M5

Base

## Details

- **Price:** 3385.56 CAD
- **Vendor:** Dinan
- **Type:** Axle Back

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3385.56 CAD | In stock |

## Images

- Photo - Primary
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/dinan-12-16-bmw-m5-freeflow-axleback-exhaust-system-black)
> Updated: 2026-07-05