Dinan Free Flow Axleback Exhaust - Black Tips - BMW F97 X3 M / F98 X4 M

Dinan's S58 axleback for the F97 X3 M and F98 X4 M retains the factory computer-controlled exhaust valves — quiet at low load, fully open under hard acceleration — with 4.5" (114mm) black ceramic laser-engraved tips filling the factory cutout in the rear valance. The oversized tips use an inverted clamp neck: the clamp seats inside the sleeve rather than at the tip's outer neck, allowing a longer visible sleeve length while hiding the hardware completely from view. Symmetric quad arrangement, Dinan's signature straight-cut tip profile. No coding, no permanent modification required.

Features:

+ Computer-controlled exhaust valves retained — quiet at low speed, open at high load
+ 4.5" (114mm) black ceramic laser-engraved tips with inverted clamp neck
+ Hidden interior clamp for clean, unblemished installation
+ Symmetric quad arrangement, straight-cut Dinan tip profile
+ BMW F97 X3 M / F98 X4 M fitment (S58)