Description
The 3DDesign Exhaust Dual-Valve Controller allows manual control of factory exhaust valves on select BMW and MINI models, letting drivers open or close both valves at will for a more aggressive or quiet exhaust tone — independent of drive mode. It installs easily, maintains OEM functionality, and adds sound control flexibility without error codes.
![3DDesign Exhaust Dual-Valve Controller for Gxx BMW M2, M3, M4, and M850i / U25 MINI Countryman JCW [4191-00102]](https://diamondusedparts.com/wp-content/uploads/2026/04/3ddesign-exhaust-dual-valve-controller-for-gxx-bmw-m2-m3-m4-and-m850i-.jpg)





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