Dinan's Free Flow axleback system is built entirely from 304 stainless steel and dyno tuned for maximum flow with minimum backpressure. A computer controlled valve keeps the M2 quiet at low speed and opens fully under high load, where the exhaust flows straight through 3.25 inch tubing for peak power and an aggressive tone. Spent gases exit through quad 3.5 inch laser engraved black ceramic tips carrying the Dinan logo, and the system reuses the factory valve actuators, brackets, and hangers for a factory fit. Dinan rates maximum gains of 6 horsepower and 5 lb-ft of torque.
| Type | Free Flow Axleback Exhaust System |
| Position | Rear |
| Material/Finish | 304 Stainless Steel; Quad Black Ceramic Tips |
| Quantity | 1 |
| Part Number | D660-0056-BLK |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2018 | BMW | M2 | Base |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
