Dinan Free Flow Axle-Back Exhaust - 2020-2025 BMW X3M/X4M

The "baby M's" of the 'X' family just got a bit more big brother like. With more volume and a deeper, more aggressive note courtesy of the Dinan axle back exhaust system, the F97/F98 now stand on the precipice of rivaling, or even surpassing, its V8 siblings --- at least, in regards to sound. With an intoxicating and menacing sound befitting of a high performance SUV the X3M/X4M holds its own amongst the pantheon of more traditional M's. In order to achieve the deep and throaty signature Dinan sound the system incorporates larger 76mm tubing (vs 70mm stock) that allows freer flow through the entirety of the system but specifically to both outer pipes when the enlarged valves are open. The resulting flow and sound mimics an awe-inspiring straight pipe solution with a deeper, fuller tone, a defining element of all Dinan exhausts.

Fits: BMW S58: X3 M (F97), X4 M (F98). Confirm your exact car with us before ordering.

Brand: Dinan · Part #: D660-0086, D660-0086-BLK

• Ships from the brand or distributor, usually in 3–7 business days.
• Free US shipping on orders over $250.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.